accidental formatting

I was trying to install debian, and  I accidentaly formated the wrong partition.  I had 2 drives connected at the time (set to master/slave prperly) I stopped the format only a minet or two into it so most of the partition should be fine.  but there was 90 gigs of data that would be nice to have back (this is a personal computer nothing too important just music and the like)  is there any one that knows of a good progeam that can mount a partition ( red hat 9 ext3) read the entire thing and rewrite the allocation table leaving the data in tact so that it does not have to be copied anywhere elese?  I have been looking a little bit but was hoping for someone elese there to tell me of a program they know works well, preferable free ;)

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