You have an armrest and auto lights? I hate you!
Anyway, no, as I understand it, you need to get a new cage to hold it, code it to the car and get the gps wire etc. I've not done it, but think it takes a fair bit of work - look on vwaudiforum.co.uk or tyresmoke.net as there are some threads there that go into detail.
Ambient lighting - I'll get you a pic next time I'm in the car!
Click the link to see my car, it's not so much of a 'build thread' because not enough building is going on!
http://uk-audis.net/forums/p/2137/19732.aspx#19732