Check your jumpers. Try CS (cable select) to detect. Try it at the end of the IDE cable alone and if that works slave it to something else on the master spot. Try the IDE 2 cable spot...
Troubleshooting: change one thing at a time and restart the machine. Check the screen on bootup to see if it's detecting at all in POST.
Thanks for the reply's. Will check out a few things that these tips reminded me to check. Will reply when going through a few more things and let you know what I find out.