how to turn it off:
1. Open the registry editor by going start->run and typing "regedit" then pressing enter
(ALWAYS backup your registry before making changes)
2. Nagivate to "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\"
3. Look in each of the keys inside that one (they look like: {random numbers and letters]) and determine which one is your network connection. You can tell this since it will have your computers local ip address stored in it.
--if you don't know your IP, do a start>run>CMD>ipconfig /all
4. Add a new key called "TcpAckFrequency" of type REG_DWORD and set the value to 1.
4b. If you are using windows 2000 call this new key "TcpDelAckTicks" and set it to 0 instead.
5. Restart your computer.