http://www.leatrix.com/leatrix-latency-fix

About
Leatrix Latency Fix will reduce your online gaming latency significantly by increasing the frequency of TCP acknowledgements sent to the game server. For the technically minded, this is a program which will modify TCPAckFrequency.

You will see reduced latency in many online games including World of Warcraft, Guild Wars 2, Diablo 3, Star Wars, Rift, Aion, Warhammer, Lord of the Rings, and more.
Installation
Simply download the program, extract it and then run Leatrix_Latency_Fix_3.00.exe. When the program launches, click the Install button. You will see the status change from 'Not Installed' to 'Installed'. You need to restart your computer (or disable/enable your network card) for the changes to take effect.

Your Windows account needs to have Administrator rights in order to install or remove Leatrix Latency Fix. If your Windows account doesn't have Administrator rights, you will be prompted for the credentials of an account that does have them.

After Leatrix Latency Fix has been installed, you can login to your online games with reduced latency!
Guides

Installation video: http://www.youtube.com/watch?v=S_ts6coln3Y
Frequently asked: questions http://www.leatrix.com/latencyfaq
Mac support: http://www.leatrix.com/latencymac

Download
Version 3 download [zip]: http://www.wowinterface.com/downloads/info13581-LeatrixLatencyFix.html

http://pastebin.com/1w50cEMS