i have mine setup that way as well and there are several quad boot tutorials including video on the web. I would suggess creating two partitions for linux (not formatted) need a small swap and a big one for the os, but you should just be able to leave everything in windows alone and just roll w/ it as grub should become the default boot loader. You may run into some issues w/ raid though, but like i said there are tutorials around there, and i'm actually somewhat busy at work so i can't check for you atm :(