I've tried some of the tweaks discussed here, with mixed results.  Here are the results from my most recent running of tweak:  http://ttester.broadbandreports.com/tweak/block:46079b3?service=cable&speed=3000&os=winXP&via=normal
::::::::::.. Download Stats ..::::::::::
Connection is:: 2549 Kbps about 2.5 Mbps (tested with 2992 KB)
Download Speed is:: 311 kB/s
Tested From:: http://www.testmy.net/
Bottom Line:: 46 times faster than 56K you can download 1MB in 3.29 second(s)
Validation Link:: http://testmy.net/cgi-bin/auth_check.cgi?num=252525
I began around 1.6-1.8Kbps, this test was after changing rwin to 48000.
Can I change anything to get closer to advertised speed?

Thanks for the quick reply!
I've tried the 3000/256 settings, they appear to slow me down 400-500Kbps, but will give it a go with the 3000/384.  I'm not sure what the caps are (Im a cable guy and were told 256).  Here are the results:

::::::::::.. Download Stats ..::::::::::
Connection is:: 1950 Kbps about 2 Mbps (tested with 2992 KB)
Download Speed is:: 238 kB/s
Tested From:: http://www.testmy.net/
Bottom Line:: 35 times faster than 56K you can download 1MB in 4 second(s)
Validation Link:: http://testmy.net/cgi-bin/get.cgi?Test_ID=RUQWD50YG

Here is the link to the tweak test after I made the changes.  I use Zone Alarm, and have to completely shut it down to run this test, I haven't noticed yet any difference with or without ZA running.

http://ttester.broadbandreports.com/tweak/block:2c72358?service=cable&speed=3000&os=winXP&via=normal

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\jtg>tracert testmy.net

Tracing route to testmy.net [67.19.36.6]
over a maximum of 30 hops:

  1    21 ms     9 ms     9 ms  10.228.88.1
  2    19 ms    19 ms    19 ms  bar01-p4-1-0.webshe1.mn.attbb.net [24.31.2.34]
  3    29 ms    19 ms    19 ms  bic04-p2-0.rosehe1.mn.attbb.net [24.31.2.46]
  4    29 ms    29 ms    29 ms  12.125.74.25
  5    29 ms    29 ms    37 ms  GBr5-p80.sl9mo.ip.att.net [12.123.24.234]
  6    28 ms    29 ms    29 ms  tbr2-p013501.sl9mo.ip.att.net [12.122.11.121]
  7    49 ms    49 ms    39 ms  tbr2-cl6.dlstx.ip.att.net [12.122.10.90]
  8    39 ms    39 ms    39 ms  gar1-p370.dlrtx.ip.att.net [12.123.196.97]
  9     *        *        *     Request timed out.
 10    39 ms    49 ms    39 ms  dist-vlan31.dsr3-2.dllstx3.theplanet.com [70.85.
127.30]
 11    49 ms    49 ms    39 ms  dist-vlan22.dsr1-2.dllstx2.theplanet.com [70.85.
127.76]
 12    44 ms    49 ms    49 ms  dsr2-2-v2.dllstx4.theplanet.com [12.96.160.40]
 13    49 ms    39 ms    39 ms  gig1-0-2.tp-car9-2.dllstx4.theplanet.com [67.18.
116.86]
 14    39 ms    49 ms    49 ms  6.67-19-36.reverse.theplanet.com [67.19.36.6]

Trace complete.


2005-01-11 10:46:07 EST: 2263 / 132
Your download speed : 2318071 bps, or 2263 Kbps.
A 282.9 kB/sec transfer rate.
Your upload speed : 135758 bps, or 132 Kbps.
 

Thanks VanBuren for all the help so far...I imagine you have better things to do than help noobs with their issues, so I appreciate it!
Here's the latest test (got significantly slower with the latest tweaks?)

::::::::::.. Download Stats ..::::::::::
Connection is:: 1930 Kbps about 1.9 Mbps (tested with 2992 KB)
Download Speed is:: 236 kB/s
Tested From:: http://www.testmy.net/
Bottom Line:: 34 times faster than 56K you can download 1MB in 4.34 second(s)
Validation Link:: http://testmy.net/cgi-bin/get.cgi?Test_ID=3DCUTJ64Q

Don't have one from speakeasy, java won't redirect to the results page

Ok, using Opera now, redirection problem is gone.
Here are the latest tests:

::::::::::.. Download Stats ..::::::::::
Connection is:: 1959 Kbps about 2 Mbps (tested with 2992 KB)
Download Speed is:: 239 kB/s
Tested From:: http://www.testmy.net/
Bottom Line:: 35 times faster than 56K you can download 1MB in 4.28 second(s)
Validation Link:: http://testmy.net/cgi-bin/get.cgi?Test_ID=W3HEXM2D9

2005-01-17 19:16:38 EST: 1913 / 182
Your download speed : 1959142 bps, or 1913 Kbps.
A 239.1 kB/sec transfer rate.
Your upload speed : 187003 bps, or 182 Kbps.
http://www.dslreports.com/speedtests/1959142;187003;927c64b9627d75d7adddcadfd702b64f;2.0;chi.speakeasy.net/1106007398

Thanks

Hey VanBuren

That's a lot of information! (nitro) Maybe it can help...

TCP/Web100 Network Diagnostic Tool v5.2.1e

Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done
running 10s outbound test (client to server) . . . . . 282.31kB/s
running 10s inbound test (server to client) . . . . . . 2.99Mb/s
Your PC is connected to a Cable/DSL modem

OS data: Name = Windows XP, Architecture = x86, Version = 5.1
Java data: Vendor = Sun Microsystems Inc., Version = 1.4.2_06

   ------  Web100 Detailed Analysis  ------
Cable modem/DSL/T1 link found.
Link set to Half Duplex mode
No network congestion discovered.
Good network cable(s) found
Normal duplex operation found.

Web100 reports the Round trip time = 162.11 msec; the Packet size = 1460 Bytes; and
No packet loss was observed.
This connection is receiver limited 88.53% of the time.
  Increasing the current receive buffer (62.0 KB) will improve performance
This connection is network limited 11.43% of the time.

    Web100 reports TCP negotiated the optional Performance Settings to:
RFC 2018 Selective Acknowledgment: ON
RFC 896 Nagle Algorithm: ON
RFC 3168 Explicit Congestion Notification: OFF
RFC 1323 Time Stamping: OFF
RFC 1323 Window Scaling: OFF
Packet size is preserved End-to-End
Server IP addresses are preserved End-to-End
Client IP addresses are preserved End-to-End

WEB100 Kernel Variables:
Client: localhost/127.0.0.1
AckPktsIn: 931
AckPktsOut: 0
BytesRetrans: 0
CongAvoid: 0
CongestionOverCount: 0
CongestionSignals: 0
CountRTT: 931
CurCwnd: 65700
CurMSS: 1460
CurRTO: 370
CurRwinRcvd: 64240
CurRwinSent: 5840
CurSsthresh: 2147483647
DSACKDups: 0
DataBytesIn: 0
DataBytesOut: 3778480
DataPktsIn: 0
DataPktsOut: 2588
DupAcksIn: 0
ECNEnabled: 0
FastRetran: 0
MaxCwnd: 65700
MaxMSS: 1460
MaxRTO: 390
MaxRTT: 200
MaxRwinRcvd: 64240
MaxRwinSent: 5840
MaxSsthresh: 0
MinMSS: 1460
MinRTO: 280
MinRTT: 80
MinRwinRcvd: 62780
MinRwinSent: 5840
NagleEnabled: 1
OtherReductions: 1
PktsIn: 931
PktsOut: 2588
PktsRetrans: 0
X_Rcvbuf: 103424
SACKEnabled: 3
SACKsRcvd: 1
SendStall: 0
SlowStart: 44
SampleRTT: 160
SmoothedRTT: 160
X_Sndbuf: 103424
SndLimTimeRwin: 8882195
SndLimTimeCwnd: 1146765
SndLimTimeSender: 3036
SndLimTransRwin: 2
SndLimTransCwnd: 2
SndLimTransSender: 1
SndLimBytesRwin: 3528820
SndLimBytesCwnd: 249660
SndLimBytesSender: 0
SubsequentTimeouts: 0
SumRTT: 150930
Timeouts: 0
TimestampsEnabled: 0
WinScaleRcvd: 2147483647
WinScaleSent: 2147483647
DupAcksOut: 0
StartTimeUsec: 400330
Duration: 10037898
c2sData: 2
c2sAck: 2
s2cData: 9
s2cAck: 3

Checking for mismatch condition
   (cwndtime > .3) [0.11>.3], (MaxSsthresh > 0) [0>0],
    (PktsRetrans/sec > 2) [0>2], (estimate > 2) [68.70>2]
Checking for mismatch on uplink
   (speed > 50 [3.01>50], (xmitspeed < 5) [0.28<5]
   (rwintime > .9) [0.88>.9], (loss < .01) [1.0E<.01]
Checking for excessive errors condition
   (loss/sec > .15) [1.0E>.15], (cwndtime > .6) [0.11>.6],
   (loss < .01) [1.0E<.01], (MaxSsthresh > 0) [0>0]
Checking for 10 Mbps link
   (speed < 9.5) [3.01<9.5], (speed > 3.0) [3.01>3.0]
   (xmitspeed < 9.5) [0.28<9.5] (loss < .01) [1.0E<.01], (link > 0) [10>0]
Checking for Wireless link
   (sendtime = 0) [3.02=0], (speed < 5) [3.01<5]
   (Estimate > 50 [68.70>50], (Rwintime > 90) [0.88>.90]
    (RwinTrans/CwndTrans = 1) [2/2=1], (link > 0) [10>0]
Checking for DSL/Cable Modem link
   (speed < 2) [3.01<2], (SndLimTransSender = 0) [1=0]
    (SendTime = 0) [3.0263169961391534E-4=0], (link > 0) [10>0]
Checking for half-duplex condition
   (rwintime > .95) [0.88>.95], (RwinTrans/sec > 30) [0.20>30],
    (SenderTrans/sec > 30) [0.10>30], OR (link <= 10) [10<=10]
Checking for congestion
   (cwndtime > .02) [0.11>.02], (mismatch = 0) [0=0]
   (MaxSsthresh > 0) [0>0]

bw = 68.70 based on packet size = 11Kbits, RTT = 162.11msec, and loss = 1.0E-6
The theoretical network limit is 68.70 Mbps
The transmit buffer (101.0 KByte) limits the application to 4.86 Mbps
Your receive buffer (62.0 KByte) limits the application to 3.02 Mbps
The network based flow control limits the application to 3.09 Mbps

Client Data reports link is 'T1', Client Acks report link is 'T1'
Server Data reports link is '10 Gig', Server Acks report link is 'Ethernet'

Not sure if you needed all that, but there it is.  Tried to turn on pings before running tweak, but just switched to Outpost, turning on pings didn't haven't any effect.

http://ttester.broadbandreports.com/tweak/block:2c02953?service=cable&speed=3000&os=winXP&via=normal

Awesome job with the new tweaks!

::::::::::.. Download Stats ..::::::::::
Connection is:: 2470 Kbps about 2.5 Mbps (tested with 2992 KB)
Download Speed is:: 301 kB/s
Tested From:: http://www.testmy.net/
Bottom Line:: 44 times faster than 56K you can download 1MB in 3.4 second(s)
Validation Link:: http://testmy.net/cgi-bin/get.cgi?Test_ID=G2Q9K70FL

2005-01-18 17:15:07 EST: 3081 / 179
Your download speed : 3155134 bps, or 3081 Kbps.          
A 385.1 kB/sec transfer rate.
Your upload speed : 184060 bps, or 179 Kbps.

Thanks for your help VanBuren!  That's the best speed I've seen on this machine!