I keep a set of cables from my Traveling Software's Laplink Pro kit in the tool room. Very handy when you run into this kind of thing. The cables are serial or parallel and can be used effectively to mount a stubborn older system to a newer box and copy files.

Alternatively, a half-chicklets-size piece of C4 with a mini-cap (derived from a 30.06 primer) wired with a couple strands from CAT5, will take the lock out. The AAA battery from my Palm will set off the cap. Quiet and not much noise or smoke.

Once opened, then the HDD can be removed and slaved to the target machine.

'Course, access to the supplies mentioned above are limited, so the Laplink cables would be the more logical choice.

;-)