Solved: Documents & Settings files hidden

I don't know if I am in the right part of the forum for this, but I just opened my Documents & Settings folders and find that most of the folders have become hidden, e.g. 'Application Data' is not there, (actually only 5 folders are now visible). It's obviously shown as being there when I do use 'search', so I am wondering what, if anything I have done to hide these folders!.
Can anyone please tell me how to make the missing folders re-appear.
Thanks
Cozzielex