change your account from basic to administrator. This will give you all privileges.
Caution! Are you sure you did this right maybe a few of those files are still working within the OS? If they are and you delete them you'll be re-installing the OS.
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Okay, So i recently had to reinstally windows xp on my gateway laptop, The option I had to save some files I chose, so It created a folder - MY Back up on my C:/ drive. Now That it's been a while I want to delete that folder but it keeps telling me I can't that access is denied. any ideas how to get rid of this folder? It's almost 35 gigs on my 80 gig harddrive