Windows XP SP2 with 64 bites

Hi,

I have a question, I would like to know if anyone knows anything about a Windows XP SP2 64 bites that I need to install it on a computer which uses Windows Vista Home Basic to be exact its a Compaq Presario SG2010LA. If someone knows something about Please tell me the windows as soon as possible please.

THANKS in advance!

All I know, on this 64-bit, is that if you have 4 GB of RAM you recognize. Otherwise if you use 32-bit only recognizes you 3Gb of RAM.

from here you can download a trial, does not regard the trial lasts

http://www.microsoft.com/windowsxp/6...cts/trial.mspx