help!!!!!!!!

What in the world do I need to take out the monsoon stereo system in my 2003 GTI, or do I have to take it somewhere and pay them loads of money? Some one please help, all I have to do is get to the antenna in order to put in a cd changer.

http://www.isber.ucsb.edu/~randall/gallery/jetta_stereo


i think you need a tool, i think its a set that you put in on both sides, anti theft, vw dealer or auto parts store should have it, hope that site helps you