> I know its an antique, was thinking of taking it out and replacing it so i can preserve it or even sell it at a profit??? Any offers...

No, but thanks. Literally have boxes full of old hard drives, (and controllers, motherboards, cables, various I/O cards, modems, systems ... ...)

> But what do I do next to make this PC work??

[list=1][*]Get into the system's CMOS/BIOS Setup|Hard Drive Setup Screen (see image above for an example).
[*]Under "Type" select "user" (or "46" or "47", depends on the BIOS).
[*]Type in the number of Cylinders ("762"), the number of Heads ("8"), Write Precomp (I'd try "65536" first), then the number of Sectors ("39").
[*]Save your settings and exit.[/list=a]With any luck the system should boot from the hard drive.