bitten Apple

sdavido has been having some computer trouble, and we're looking for advice. His computer (Apple titanium G3 Powerbook, with Tiger 10.4) isn't "seeing" his external hard drive (LaCie 117 gig firewire). He's tried DriveGenius and DataRescue2 (demo versions), as well as the normal Mac disk utilities, but nothing has worked. The computer refuses to admit that the drive exists. (He says, "it isn't making clunkity noises, either.") He has a bunch of files on there that he really needs for a project he's working on, so any help and/or insights you can offer would be greatly appreciated. Thanks!