Windows XP 64bit website issues

I just installed windows 64 Bit on my computer, but, if i want to go to sertain sites, say i can go there, and search. but the most sites don’t work. they just don’t open.
and firefox 2, doesn’t work at all, so i searched for 64 bit version. but it again, couldn’t open.

any help please? (:SAD)

and oh yeah. is this normal or should i just reinstall?

Welcome to the forum, LittleKiller.

I assume this is version 3 alpha? Because 2.4 and lower don’t support 64-bit.