Well I know 100% certain, as there's no real way until someone has the EXACT build of computer, but looking at your motherboard and CPU, I'd say it should work. I'd suggest Snow Leopard as Lion isn't as stable right now as program's refuse to start after 10 minutes, and that could be a huge problem if you want to use the machine full time, also there's not 64 bit mode. Once the stable kernel is release which is currently under testing you already have snow leopard and will make installing Lion easier.

Find a nice AMD Snow Leopard guide (google Devout 10.6.8 Guide) if you want to see my guide I wrote about a year ago. Goodluck.