Just removed mine recently. You need to open up the panel on the inside of the door to get at it.
There are three nuts and four clips holding it in, and I assume two screws on th lock cylinder (mine was pushed in at the time, so I don't know.) One nut is by the lock cylinder and is easy to reach. The other two are on the handle, and I had to mess with the window assembly a lot to get at them.
The clips are real bastards though. Two on the left side (upper and lower), one in center bottom, and one on lower right. I broke three of them. Good luck. They're dirt cheap to replace though, and you might want to anyways for the fresh gasket.