You can put any hard drive in your computer, so long as it supports the interface that the drive uses. Assuming that it was an older computer, it's probably IDE/PATA (which is the big, wide, 40-pin cable/plug rather than the SATA smaller plug (comparison here: http://img.zdnet.com/techDirectory/_SATPAT.JPG )). Most new computers these days still support IDE/PATA, though may not use the interface natively. I'd suggest that you find an external enclosure online and just pop the drive in there, and hook it up with USB. You can look around here: http://www.newegg.com/ProductS.....+enclosure for enclosures. If your hard drive uses IDE, I'd suggest this enclosure (my brother owns one, too, and he says it works fine): http://www.newegg.com/Product/.....6817145385 . For SATA hard drives, this one looks pretty good, though I have no personal experience with it: http://www.newegg.com/Product/.....6817193030 .
Keep in mind, there will be far less usage of the screwdriver when installing a drive into these enclosures, but it will be a lot easier and there should be instructions included.
Hope you solve your problem! =]