No worries, we'll try the graphical route first.
Here are two freeware programmes that look like they'll be useful:
http://www.officerecovery.com/freeundelete/index.htm
http://www.pcinspector.de/file_recovery/uk/welcome.htm
When Windows went on a deleting splurge with me, a freeware programme got most of it back so these will probably be able to help.
The first one looks a little more professional to my eye, but I can't vouch for the performance of either.
Do let us know how you get on...and try and install them somewhere other than the drive affected if possible. Good luck!