yea check out ELLE's links, those are good. Basically if you're going to do a window mod, which is what most people do first.
You're gonna want to lay the window over the side panel, draw a line around the window, and then place take over the lines you drew, then place the window down again, and redraw the lines, this is insuring that you won't scratch the panel while buzzin.
Then get yourself a dremel and cut the whole side out and i would suggest using sandpaper to smooth the inside edging out. Along with the window kit you'll recieve some stripping. Place that on the inside edge and then pop you're window in, and wa-la!