Your Auto Correct file could not be saved

Hi smart people!
I have a problem here about Microsoft Office Access.
Whenever I save Auto correct file, an error message pops up.
I pasted below the error message screen shot for you to refer.
Microsoft Office Access
Your AutoCorrect file, C:Documents and SettingsHP_AdministratorApplication DataMicrosoftOfficeMSO1033.acl, could not be saved.
The file may be read-only, or you not have permission to modify the file.
This problem started when I borrowed a pin drive from a friend and did not know that it has a lot of virus.
After which I noticed some slowing down in my computer and unfortunately including Microsoft Office Access.
But when I scanned my computer for some virus, all that was found was healed. I think the scars still remain.
Please help me fine tune again my computer.
Thanks a lot.
