Windows Xp 64 bit

There's a trial version up for download on Microsoft's site. As for the full version, the last time I checked, the 64-bit version was available only if you bought a branded computer from some reputed companies. I got this info from BBC's ClickOnline some weeks back.

Visit this site for a first look on x64.

I have downloaded Windows XP 64-bit to my download manager. I cant use it bcz I have not P4 or AMD Athlon 64 bit proccesser