Well, that's cool looking and all, but I think keeping it alittle more simple with just a wireless remote is probably best. It's definitely easiest. I really like my keyspan remote. It's alittle pricey at $30 to $50. I think $25 to $30 is more reasonable, but the software its provided with is what makes the keyspan a nice remote with lots of flexibility with so few (but crucial) buttons.
If you figure out how to get that power mirror switch to inerface with a pc, let us know how you did it. I'm thinking it would easiest to interface it with a cannibalized keyboard.