Replacing the fresh air vent solenoid on 2003 Boxster S?
 

I have a 2003 Boxster S (Love it) :) There is a rattle sound coming from the passenger dash. Upon investigation I found that it is a solenoid that is the last part attached to the AC system toward the side of the car that seems to be spazing out. The dealer said it was the fresh air vent solenoid that was going out. You can see it twitching under the dash. Has anyone replaced it. it is really close to the side of the car. not much room. What do I need to do to replace this. The mechanic said it was pretty easy, but there really isn't much room to get to it. Any instructions or advice would be appreciated.