Here is my build: GA-Z68MX-UD2H-B3 i7-2600k geforce gt 430
I downloaded kakewalk and put it on a thumb drive with my partitioned SL dvd. Kakewalk starts up and Snow Leopard DVD shows up but it gets frozen at apple logo.
I had the same problem, by random I find out that when I connect the DVI cable with my monitor and the HDMI cable with my second monitor it works (only for my DVI monitor). Don't know why :-)