So I just started playing and I love this as an option. I am much more familiar with a controller. I do have an update that allows the buttons on the game pad to be used only once without shifting. I used the driver in this link. http://code.google.com/p/xbox360wirelesschatpad/
It allowed the use of the Xbox 360 chatpad to work as a standard keyboard attached to the controller. I use it for stuff like the hero panel and inventory so my main controls can focus on combat. Then Iused pinnacle game profiler to map my controller. It is a full keyboard minus F keys
The only down side to this is that the driver replaces the standard Microsoft wireless driver and forces the controller into direct input. So far it works really well but I’m still tweaking my controller button layout. Sorry I was late to the party.