What are you trying to do with Knoppix? Are you trying to rescue files, partitions, etc? I generally use
this one when I use knoppix because I'm trying to save files from someone's broken windows machine. It's a little outdated now a days...
As for QTParted, I haven't used it in quite a while now. I just use the
GParted Live CD. It supports NTFS resizing also...