can anyone help?

on or around 16 or 20 november last year there was a microsoft security update that created a folder called C:\743ce966db3fb95362626bd744 and a text file in it called msxml4-KB927978-enu.

today when backing up my system I accidentally drag&dropped an important folder full of my personal documents into the C:\743ce966db3fb95362626bd744 folder. now I can't undo the move (either using edit-undo, move or copy+paste) or even open my folder as I keep getting access denied errors. and to make matters worse it indicates my folder is empty.

I think the access denial is due to the folder being a microsoft one so is likely to be password protected. if I can get the password, I'm hoping I can get my folder back!

I've tried system restores going back 4 months but they don't seem to restore my folder into its original position so I still keep getting the error messages. I can't restore back to before 16/20 november as they setup only goes back to 1 January 2007.

please, please help - things are getting rather desparate here after 10 hours of trying to fix things!!!