2 Problems Here

First my keyless entry is acting up, and it's connected to the stock head unit, i have an aftermarket unit, but the stock one is still mounted behind for the keyless, now my keyless entry doesn't work and i need to be able to get back to it.

First - i can't seem to get the panel out to get to the area behind my head unit and i removed the two screws, but i can't get past that part

Second - i need to now how to reset the remote and headunit to synchronize up the keyless entry

thanx, sorry it's long and yes i looked in the haynes manual first