here are all the tcp/ip tweaks and ie tweakes i know of i have swbell dsl and this is what i have done to my registry
start copy here****************************
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AFD\Parameters]
"TransmitWorker"=dword:00000010
"PriorityBoost"=dword:0000000a
"DefaultReceiveWindow"=dword:0003ebc0
"DefaultSendWindow"=dword:0003ebc0
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dnscache\Parameters]
"CacheHashTableBucketSize"=dword:00000001
"CacheHashTableSize"=dword:00000180
"MaxCacheEntryTtlLimit"=dword:0000fa00
"MaxSOACacheEntryTtlLimit"=dword:0000012d
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters]
"DeadGWDetectDefault"=dword:00000001
"DontAddDefaultGatewayDefault"=dword:00000000
"ArpRetryCount"=dword:00000001
"DefaultTTL"=dword:00000040
"TcpMaxDupAcks"=dword:00000003
"EnableDeadGWDetect"=dword:00000000
"KeepAliveTime"=dword:000493e0
"EnablePMTUDiscovery"=dword:00000001
"EnablePMTUBHDetect"=dword:00000000
"Tcp1323Opts"=dword:00000001
"SackOpts"=dword:00000001
"TcpWindowSize"=dword:0003ebc0
then we enable more open connections for IE
[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"MaxConnectionsPerServer"=dword:00000014
"MaxConnectionsPer1_0Server"=dword:00000014
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"MaxConnectionsPerServer"=dword:00000014
"MaxConnectionsPer1_0Server"=dword:00000014
end copy here****************************************
copy that to notpad save as xptweak.reg double click on it to add to your reg and reboot machine for tweaks to take
also
www.dslreports.com is a good site for testing your dsl speed