OK, first boot from a floppy or CD to make sure the system works. Then check the connections. Unplug then re-plug the IDE cable and the power connector. Check that the drive has power from the power connector. Next switch the IDE connector to the secondary IDE controller. (Usually the one that has the CD reader.) If all of this is a no go, then try whacking it with a screw driver, don’t laugh, I recovered lots of data by doing just that. If you are going to try the Last resort and whack it, be sure that you have installed the replacement drive w/OS, and are ready to recover the data.
You can get a 40Gig WD drive for 64 bucks from this place:
http://www.upgrade-solution.com/deta...ID=557&add=yes
If you have to send your drive out to recover the data, be ready to pay them well.