I did a bit of research into this myself a while back and came to the conclusion that it had already been done so there's not a lot of point re-inventing the wheel.

One of theguys who's done it is here and if you scroll through the thread you'll find most of the software and stuff.

http://www.rcgroups.com/forums/showthread.php?t=801036

We haven't sat down and put any of these together yet but we were thinking that the modules would replace the mosfet drivers as you can get a pwm output from them rather tan using a driver.

Would be nice to know how you get on.

Andy