Windows XP: x86 vs x64. (doubts)

[gugutz]

I have a friend who owns a K8N Asus Motherboard, and a Athlon 64 2800+ Processor, and he uses the 32bit version of WindowsXP ´cause he is affraid that maybe his aplications and games may not work on the 64bit Windows.

Are there any known incompatibilities with apps and games? Witch precautions must he take? Is it worth it to use the x64 Windows, since he owns a 64 bit processor? And he will still be able to run his 32bit apps and stuff?

Sorry for posting it here, but the guys on 64bit Forum don´t reply to my question...

Since now, thanks for your help.

greetings.

gugutz.

[nitroshift]

If you search the forums, you find the answer; look here: http://www.msfn.org/board/index.php?showtopic=71980