[[asg]davo]

Well for the first question it should open automaticly. Every garage u can open in single player should open automaticly in sa-mp.

Second question u could use a textdraw
if u don't no how to make a textdraw look here
I wod use this
http://forum.sa-mp.com/index.php?topic=143694.0 if u need it translated tell me and I will send u pm-but there is a English version
not this
https://sampwiki.blast.hk/wiki/TextDrawCreate