I just follow Music.Leecher's way and I can install successfully to my Acer Aspire 4937G laptop which has geforce G105M (512MB).
It's running 10.6 Snow Leopard under 32bit mode, can't run under 64bit mode (get black screen).
Fully CI/QE support, but no VGA output.
I find the best easy way to get Geforce G 105M fully working under SL 32/64.
I only use boot loader option <key>GraphicsEnabler</key><string>y</string> and remove any injection.
Guess what? I got fully QE/CI support, VGA output correct and screen detecting work.