Seagate HD not detected

Connectors? As in places to put the cords? There is one place for USB and one for the power cord. This is what it looks like:
(There is a hole that nothing goes to as well, but literally, nothing goes there.)

If I can find someone running 7... I'm in Iowa :) so on average the most common version of Windows is still XP. Might be able to find a Vista user or two amongst family/friends, but that's not much help either. I'll try to see if anyone has bought a new computer any time recently (that lives close enough for me to test this out) as most people don't upgrade an older computer when a new version comes out due to expenses.
I do know that I am supposed to have the drivers for it and that it is listed as a plug and play device by both Seagate and Microsoft. This is frustrating...

Any help is much appreciated.

I suggest you see if the drive can be seen by a live boot CD.
Try
Partition Wizard Boot CD
Hirens Boot CD

Hirens boots into DOS, XP, and linux

All excellent to have in your toolbox anyway.