Bought a brand new hard drive from Amazon, but my PC isn't seeing it and I'm linking it up to my PC using a SATA to IDE cable because my computer doesn't have an interface. Without me having to send it back could it be that this lead just so happens to be incompatible with this hard drive because I also have another SATA hard drive and it runs fine with it, but this doesn't?
Those adapter cables usually are not bi-directional...most likely, it is intended for connecting ATA drives to SATA ports, not vice-versa. Amazon is pretty good about returns, even when it was your mistake. Return it and get an IDE drive or maybe a USB drive.
Sorry about the delay and it's because I'm registered under another e-mail address I haven't been checking as much, but I think I've solved this in here: http://club.myce.com/f138/i-have-hard-drive-but-its-slow-starting-up-i-only-want-os-314492/