A please would be nice
You would be best to get a VIA vt6421A/L based chipset VIA SATA PCI card. But just like Textbook has stated if you don't know what a SATA PCI card is then you are going to have problems.
Please take your time to read the tutorial;
http://www.360mods.net/Downloads/details/id=61.html
We have warned you that you need a good basic understanding of a PC and if you do mess things up then like I said we have warned you.
Good luck