Native Monitor Resolution + Old Encrypted Files

A clean install of WinXP was done and it seems that

a.) my monitor's default resolution (1680x1050) is no longer an option in my display settings

b.) I have some old encrypted files of which I must gain the permissions to.

So, what do I do?

a. video card drivers.

b. take ownership of the file or folder.
/>http://support.microsoft.com/kb/308421

I fixed the monitor issue.

I still can't take ownership of the files, though.