160gb ATA100 Hard Drive, not working at all

I bought a 160gb hard drive recently, and when I attempt to install it into my computer, it just doesnt work.

The model is "Seagate Barracuda 160gb ATA100 7200RPM, 8MB 8.5MS Hard Drive OEM"

I have made sure the jumpers are switched into their place.

Alright... Now for the stupid part of the whole thing.

I put it in where I had a second 40gb hard drive (I had a 40gb w/ windows, and a 40gb with random stuff) I removed the second drive, and the IDE cable was black, the Windows XP one had a white cable. Now I just popped in the 160 gig hdd. Booted up, and it said that there was no boot sector, so I took it out, and tried booting, it worked fine.

So I put the Hard drive in the WHITE spot instead of the black spot. It then booted, and once windows started, it said "HDD Detected" etc etc. So when I went to Explorer, it wasnt there... I checked hardware manager, and it says some random numbers (usually it says the brand etc) and when I properties it, i get "GenDrive" in vendor etc. And it doesnt report it as anything (no serial num etc)

So at the moment I have it completely unplugged, but its in the computer. I have a theory that its my cables that are only ATA66 or w/e it is.

Specs

Pentium 4 2.8GHz
Sapphire x1600 Pro
1gb Kingston RAM (2x512)
Soundblaster Audigy
Two DVD Drives, one DVD and the other DVD writer
One IDE Hard drive, 40gb (not sure if its ATA66 or ATA100)
ECS P4S5A

Googling my Mobo shows it does support ATA100, so it SHOULD work. It just doesnt...

Thanks