I'm not too sure if the board will support the Phenom.
Just cause it'll have AM2 then, doesn't mean that a Phenom will run on it.
And besides, if he wants to go Phenom, don't go cheap ass on the motherboard, it will be seriously hampered by the older architecture, so just get a decent AM2 board, they are not all THAT expensive, and put a Phenom on that.
And btw, I see everyone talking about the Phenom 6000+, but wouldn't that be the Phenom 9600?? I don't recall there being a 6000+ Phenom. That's still Athlon x2 numbering.