It seems I must have misled you when I said...... plugged in the 'old hard drive' exactly as you told me but it loaded up very slow and I missed pressing delete so it went through the usual start up procedure..... in my previous post.
The problem hard drive did not fire up at all. I was referring to the PC starting up very slowly and the message which followed. Sorry about that.
I changed the jumpers as you advised but still the old hard drive did not fire up.
I am coming to the conclusion that its had it!
Mind you I have two more HD's both 20gb and a 2Gb one and none of those are recognised either. Does that help?