ok, complete newbie here, so be gentle

my flatmates sata hard drive has been goosed by norton goback, cant boot it. i installed a second ide drive and installed windows xp, which can see it but doesnt mount it. i borrowed a knoppix 5.0 cd from a friend, boots in fine, and can see the sda1, but when i click on it, it says "Volume is dirty. Forced to continue". It then opens up, but only shows me a folder containing "my documents and settings". I think this is a partition created when i tried the second drive, which is now unplugged, not sure how it got on this drive.

The drive properties is showing 130GB used out of 250GB. The properties on the folder i can see is 21GB.

I dont know where to go now, as i've never used Linux before. Can anyone give an idiots guide to restoring his partition?

The computer is attached to my windows network, and i can see my servers drive, so once i can see his files, i can rescue them and format his drive (and recommend he never uses norton products again !!)

many thanks,