You can only use 'one' copy on 'one machine. If you want to install Vista on
two machines then you need to buy two copies of the operating system. Sadly
volume licensing starts at 5 PCs.
As for your PC being 64 bit compatible check either your PCs handbook or
else your PC manufacturer's website. That should give you details of whether
the processor is 64 Bit or not.
--
John Barnett MVP
Windows XP Associate Expert
Windows Desktop Experience
Web:
http://www.winuser.co.uk
Web:
http://www.silversurfer-guide.com
Web:
http://xphelpandsupport.mvps.org
Web:
http://vistasupport.mvps.org
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"titus12" <> wrote in message
news:#...
> I am thinking about buying Vista. I have a computer that has XP Home SP3.
> I want to build another system. Can I install vista on the newly built
> one after I install it on my old one? Also, is there a way to scan my
> present computer to see if the 64-bit Vista version can work on it?
>
> Thank you,
> David