Open a command window and run chkdsk h: /f

If that doesn't fix it, would you be willing to take the hard drive out of it's case and connect directly to the IDE cable? If you do, make sure the jumper is set to slave or cable select if you use the 2nd IDE connector.

If you still can't read from IDE, buy data recovery software and try. Otherwise, note that data recovery by professionals is NOT CHEAP!