You can install a Vista upgrade over your Windows XP. However if you ever
need to reinstall Vista you will need to have 98SE installed and then install
XP over it and then install your Vista. So make sure you have your Win 98 SE
and XP cd's and product keys or make some and by make some I mean backup
cd's. I suggest going to
http://www.microsoft.com/windows/pr...advisor.mspx?wt_svl=10008VHa1&mg_id=10008VHb1
to run the Win Vista Upgrade Advisor which will tell you which programs
currently on your PC are compatible with Vista and it will also tell you if
your computer needs any part upgrades to be able to run Vista as it won't
work with most computers any older than a year and a half depending on what
exactly you bought for a machine. And before you run the scan make sure that
any and all devices that you plug in to your computer like a digital camera
or printer or mp3 player etc are plugged in first. If the results say some of
your products/programs aren't compatible with Vista do some research on those
companies websites to see if they have made those non compatible products
recently compatible just in case MS hasn't updated their Upgrade Advisor etc.
Hope this helps.