How do I change what the cd player screen reads when I turn it on?

I bought my TC used and whoever had it before me set it so when the car is cranked the screen flashes "P's Pimpride" (I kid you not)

I looked all through the manual to see if there is a way to reset it, but I didn't find anything. A friend of mine said its a setting you do when you get the car new...
So how the heck do I change it now!?
HELP