From memory the only issues are removing the connections for heated screen as they can break unless you can wedge the window up so it won't drop when undone from the clamps. Make sure it doesn't fall down!
The adjuster is a double threaded bolt in the middle that uses an Allen key to hold in place.
There's a cable from one side to the other, make sure the window doesn't catch it when going down.
And getting the old regulator out of the hole in the door, it does come out with plenty of wiggling, swearing and tongue in the right position.
Once done enjoy the dropping of the window this summer for a nice cool breeze.