all info under one profile missing

I have been using XP on my computer for over a year now.
There are four profiles set up. Everything has worked
fine on them until yesterday. Yesterday, everything
under my profile disappeared - my name and icon were
still on the desktop, but when I click on my name it
comes up to a screen without any of my shortcuts on it.
The regular programs are there (word, Excel, etc)(without
the shortcuts OR MY FILES!) but my wallpaper is gone and
so are all my shortcuts and files. Everytime I click on
a program it acts like it is the first time I have ever
used it and asks me if I want to set it up. Everything
seems fine in everyone else's profile. It is like I
never existed! Please help me find myself again!
Thanks - gb