The free Undelete PLUS can come to your rescue. Run it, and it scans your system for files that have been deleted, even those removed from the Recycle Bin, or deleted on a network drive or via a DOS window. It lists all the files, and tells you whether it can likely be restored. (In some instances, the delete file has already been overwritten; in that case, you can kiss it sayonara.) Then tell the program to restore your files, and they come back from the dead.
Go to the download page now: