Hi, new to the board here. I'm just cross posting on this forum as well to share my experience installing SL 10.6.3 on the Ga-G31m-es2l board.

http://www.tonymacx86.com/viewtopic.php?f=7&t=3080

Cliff notes:
I used the iBoot method and was able to successfully install. As expected sound, lan, and sleep are not working but am looking into it. I can also verify that the network drivers work from this link http://code.google.com/p/iats/downloads/list worked for me.