The Source engine, which runs Garry's Mod, Half Life 2 and most other Valve games, runs on XP, so you can run the game normally without having to do anything special.
Yes, it runs just fine, just install it on Steam and go.
You cannot run Mac on Windows XP. But you can run Windows on Mac
Tally 6.3 run on windows XP
Yes ofcourse, Windows Vista is upgraded version of Windows XP. Obviously it can run Windows XP applications.
They are "compatible" in the sense that many applications that run on Windows XP will run on Windows Vista.
Windows Vista can already run most XP applications, with no need for any additional software.
Yes. The Windows version of PCSX2 runs on Windows XP.
Yes indeed, any version of VB can run on Windows XP.
Yes World of Warcraft will run on all computers Windows 7, Windows xp, Windows Vista
Yes. The Windows version of Safari runs on Windows XP.
No. Windows XP will not run on a computer with a 486 processor.
Start > Run > Registry Editor > Windows XP
I think that there is only way to reinstalled windows xp