OfT: Windows Vista isn't typically great for gamers, XP is more for gaming. ;P
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OnT: If WarRock stops responding -> There are several possibilities on why it does that.
1- The hack is a fake. ( Please tell us where you even downloaded it. Don't post a link, fyi. )
2- Run As Admin ( You already know this. )
3- Hack could be XP compatible only ( Not sure if this is possible, but could be. )
4- Turn off Anti-Virus and Firewall ( You already know this. )
5- Does WarRock work without the use of hacks?
6- Restart computer and try again
7- If all else fails, the hack most likely is a fake, or that it's old/patched and WarRock just crashes without the "Hack Detected" message.