Okay, I reormatted it with QTParted, the program with knoppix 5, I still cannot mount the hard drive,
... oh, oh! Which drive did you format and which drive do you can not mount?

Please open a terminal and type
Code:
blkid
and
Code:
fdisk -l
Tell us the output of both commands.

If your Windows drive is real damaged, then there is little hope to restore something. You can try TestDisk (on Knoppix CD). This is not a tool for beginners! Read all the documentation!

First of all follow the chapter Disk Duplication.

Greetings Werner * http://www.wp-schulz.de/knoppix/summary.html
Own Rescue-CD with Knoppix (Knoppix V6.4.4 remaster)