Here is a how-to some guy made using his rx-8. I'm sure it would be pretty much the same for our cars. I'll be doing this also!

http://home.comcast.net/~c_wrzesniewski/windowsmod.htm

The first sentence made me giggle.

And it's ~$50 for the module.

Now the question is...would I want to buy 2 to do the passenger side? Hell, I've paid more for less.