Question
 

Ok new question, and this time I didn't find it in the master sticky. I need to know how to make part of the map move when the use key is pressed.

Re: Question
 

Make that part of the map a func_door and check the "use_key" box. At least i think its something like that.

Re: Question
 

Oh and how do I make it move in a dirrection other than up and down? (Like making a floor panel slide forwards)

Re: Question
 

Use the angle key and set a value of the angle you want it to move at.

Or, alternately, you see those little buttons that say 90, 180, 270, 360 etc etc? Click one of those, when you're in the top-down view (i.e. when the little axis marker at the center of the grid shows X and Y.)