There are some disk-saver or data recovery programs out there. They work with varying degrees of effectiveness, so be forewarned...
[a href="vny!://www.freebyte.com/filediskutils/#datarecovery"]vny!://www.freebyte.com/filediskutils/#datarecovery[/a]
[a href="vny!://www.pcworld.com/downloads/collection/collid,1295-order,1-c,downloads/files.html"]vny!://www.pcworld.com/downloads/collection/collid,1295-order,1-c,downloads/files.html[/a]
[a href="vny!://www.lifehacker.com/software/disk%20recovery/"]vny!://www.lifehacker.com/software/disk%20recovery/[/a]
Often times just trying a disk in another computer's drive will make a difference, but that's iffy.