Building RP Maps?

I need help, I’m trying to make a medieval RP map but I’ve got a 2 problems:

A) I don’t know how to make doors that people can own (will try and get picture)

B) Do I have to download the mod from http://www.garrysmod.org/downloads/?a=view&id=68004 then load it up in hammer

If anyone can figure it out please tell me because i know its possible, cyberwolf has made one of these maps

B)

Thats an addon… X_X So you can’t.

thanks and lol quick post =P

A) I’m not sure but I think you just make normal doors and DarkRP does it by itself.
B) As Daniellynet said, it’s an addon. So you can’t load it in the hammer editor.

i will give it a go then thanks =D