windows xp question

i downloaded the 180 day winxp-64 bit edition trial
but it downloaded it as an .iso image file
what program do i need to get it to install
on my computer

thank-you for any help or assist

You'll need to burn the ISO image to a blank CD or DVD...

Downloading the Windows XP Professional x64 Edition Trial Software
http://www.microsoft.com/windowsxp/64bit/evaluation/isotocd.mspx

If you have nero, you can right-click the file once you have it downloaded and tell it to open with nero. Then nero should pretty much do the rest for you. I think windows might be able to burn the iso too.