No. Obviously, if you upgrade to Windows Vista, you will have Windows Vista.
depends on which o.s(operating system example linux, xp, vista and so on...) you are running
windows Xp is better but Vista is slightly faster
Drivers written for Windows Vista are not backwards-compatible with Windows XP. Most hardware that has a driver for Vista should also have a driver for Windows XP.
They are "compatible" in the sense that many applications that run on Windows XP will run on Windows Vista.
Yes ofcourse, Windows Vista is upgraded version of Windows XP. Obviously it can run Windows XP applications.
"Vista XP" is not a computer type. Vista and XP are both previous versions of the Windows operating system. The current version of Windows is Windows 8.1.
Windows XP is better. Vista is a better at running games, but it is slower and more problematic than XP
Windows Vista is notably far more secure than Windows XP.
No.
There is no such thing as "Windows XP Vista." There is Windows XP and there is Windows Vista. They are two different versions of the Windows operating system (XP is older than Vista). As to which is better (XP or Vista) if that is your question -- I think most people would say that XP is better, but this probably depends on which operating system you are used to and what type of work you do with the computer. That said, even Windows Vista is out of date, now. New machines will have Windows 8 (or Windows 7 if it is slightly older).
You cant, windows xp sucks. Windows vista the best! with windows vista you can do it!