partition table recovery software

Hello,

I tried splitting/adjusting partions on an older system. Initially linux fdisk was warning me that hda1 did not finish on a cylinder boundary. Now that I proceeded and rewrote the altered partition table to disk, I get the same warning for all other (primary) partitions, and DOS/Windows can't boot or even recognise the C: unit anymore. The XP recovery console, though, can find the original C:\WinNT installation, and list the C: (fat32) contents. I am guessing the initial partitioning may have been defined without LBA or something like that, and the apparent disk geometry as seen by a recent fdisk is slightly different - not different enough to have detroyed everything, but enough to render the system unbootable. Anyway, I was wondering if anyone could point me to a tool that would, say, scan the disk and guess a partition table based on identified FS signatures or other heuristics. TIA for any suggestion.

Testdisk.............last time I check, it comes with knoppix.
http://www.cgsecurity.org/