Ouch, recovering delted files is no mean task. I would recommend that you unmount the file system that conatins this directory ASAP to prevent further overwriting of files.
If this includes your a good part of your OS, you may need to lean on a live OS CD such as Knoppix. For details I would look at:
http://e2undel.sourceforge.net/recovery-howto.html
I wish you the best of luck.
