Disk editor for linux?

Does anyone know of a disk editor for Linux on x86? (kind of like the old Norton's disk editor) - or possibly some way of repairing an NTFS filesystem from Linux?

I've got some corrupt files that can't be deleted on a SATA disk that I mainly use from Windows (yuck!). CHKDSK doesn't work and Microsoft's answer to this is to backup the filesystem excluding the corrupted files, reformat and restore. This seems a bit excessive for just 3 corrupt files, and is a bit of a problem since I've got getting on for 100GB of stuff on there and don't really have anywhere to back it up to easily.

So my thought is to try and repair it by hand by manually editing the MTF, or of finding some other utility for doing it. I've got Mandrake ..sorry Mandriva installed on the same machine, so doing something from Linux seems worth a try. I've already tried mounting the partition on Linux, and while it lets me copy the files with no problem it doesn't let me delete them as the filesystem is read only (it's not mounted read only but seems to be read only anyway - I'd guess the NTFS support isn't fully implemented).

Thanks