Hi mappers this is Kasami!
Here is a small room with a func_door_rotating in it.
The doors are controled by two trigger_multiple one at each side
of them and to open those you
will need to walk thru the triggers! You cant just open the doors by
pressing the action key in front of them! I installed
the triggers a few inches away from the doors! If you keep staying
in the triggers the doors wont close!
But just check the files out! I put three files in the *.zip file
like in any other *.zip file of mine. The *.bsp,*.map 
and the readme file. To see how it works check the *.bsp file out!
If you need any exact information just check the *.map file out
and see how i did the settings!
Or ask me by E-Mail "wolle@netmdc.com".
Cya