This patch will remove the limits in xp SP2 FOR unresolved, half TCP connections. This limit causes programs that scan and make many connections at once to not work properly. ProxyGrabber, STB, ProxyScanner, and many other programs don't work right unless you use this patch!
Its only if you have XP Service Pack 2!
Note: I got a virus warning when installing this. I'm pretty sure that's it's due to the fact that it is an executable file that changes the way the OS works. Despite the warning, there was no information on the "virus" at the virus detection software's website. Still, use this program at your own risk