So this is a picture showing the new hardrive, hooked up properly to the new computer?
If I'm correct, it looks like you do infact have a different kind of hard drive in that computer, and it doesn't support the old one. there maybe some other way to connect it but I'm not sure about this. I suppose that someone else on here might be able to help you further.
I'm sorry I couldn't help you.
But its been nice talking to you and I wish you luck!
I also have to sign off for the night, but I will be back tommorrow and maybe I'll talk to you then.
I may do some research and if I find anything I'll post tommorrow.