I have previously tried to simply open, copy, or move the folder when operating in safe mode, but I didn't mess with the settings like Eric suggested. I'll try that first.
FYI: Something strange, though is when I place my cursor on the folder, it says "folder is empty" and properties shows the folder is 0 bites, 0 size on disk and holds 0 folders and 0 files. I wonder if that tech that worked on it somehow screwed up that folder and its contents. There should be 30 or 40 folders inside it and at least 7-900 meg of data inside those folders.
Do you really think it is empty or simply not revealing the contents because of the "Access is Denied" issue? If it truly is empty, the entire point is moot.