Tony; here's what I would do... if you don't already have one, buy a 2.5" <--> 3.5" cable adapter for your drive and try to boot your drive in your PC; that way you can try and run diagnostics on it...

Let me know if you can't get ahold of those cables and I'll buy/ship one to you; they sell them here at a local store..
-mark

MK2: 36gb
Tivo: 90gb
CPU: 120gb
...I think drive manufacturers love me!