running on vista home basic, and would love to reformat and put xp on there instead which i have a multi license copy of.
How do i go about deleting one and adding the other, can some one help me? I would really appreciate it
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I recently bought a second hand computer from a friend. I think he has installed a pirated windows 7 Ultimate and a message has coming up saying i have one day left to activate.

Does this mean the OS will stop functioning completely? or does it just mean i wont recieve any new updates?

Also,if i want to buy genuine windows, so does that mean i have to reformat the HDD or just buy a genuine copy and enter the key?

I have 512mb of RAM on my computer, is this enough to install windows 7 ultimate (I already have the CD ready).

Also what do I need to do to install this, do I need to reformat my hard drive?

I booted windows 7 from disk and thought that i reformated the hard drive..But apparently it only has 4gig free and has remember all my old folders and files.

How do i totally reformat my hard drive? preferebly without having to re install 7 again.