Next grab your bracket and line it up with these holes. I started with marking the hole for the center one because it has some adjustment and you can rotate the bracket to make it fit right.
Make your mark and then take a punch or other pointy object and place it on your mark and tap it to make an indent so that your drill bit has a place to center on. Note I would recommend multiple small taps over one hefty hit for the windows sake. Watch your swing so that you don't hit the window.
Before you drill take some spare cardboard or whatever you have lying around and cover your dash vents so that you don't end up with a bunch of metal shavings in there, and subsequently in your wife's face
Next drill your hole. Use multiple bits to make it easier, and go slow. You cant get the angle exactly right(read 90degrees) with the window in your way, so I put the mark just a little off center so that the drift of the drill bit would end up being close to center.
I chose my final drill bit a little tight for the jack nut so that I could "waller"(the technical term)
out the hole to fit just right. Im not sure that this is needed but I wanted it to be as tight as possible.