Works with everything that uses DNS! Including PS3 and Xbox360.http://code.google.com/p/namebench/Try out namebench. It hunts down the fastest DNS servers available for your computer to use. Namebench runs a fair and thorough benchmark using your web browser history, tcpdump output, or standardized datasets in order to provide an individualized recommendation, Namebench is completely free and does not modify your system in any way. This project began as a 20% project at Google.
Namebench runs on Mac OS X, Windows, and UNIX, and is available with a graphical user interface as well as a command-line interface.
Enjoy 
I gained 94% speed, it also reduced my lag with other players considerably.Step 1. Download NameBench;
Step 2. Run NameBench;
Step 3. Look at the top right of your HTML log, and in the box where it says "recommended configuration (fastest and nearest)" note the top 2 servers;
Step 4. Use the first two DNS from step 3 with the following guide:
Windows XP:
http://www.plus.net/support/domains_and_dns/dns/changing_dns_xp.shtmlWindows Vista:
http://www.plus.net/support/domains_and_dns/dns/changing_dns_xp.shtml(step 6)
Windows Seven:
http://www.sevenforums.com/tutorials/15037-dns-addressing-how-change-windows-7-a.htmlStep 5. Restart your internet, and your done!
( Restarting your internet can take several minutes ).