just some general info:
the stairs are made from func_door, maybe there was a better way but hey, works fine.
i tried to make the stairs trigger as you move up them but it has problems when you stand in the trigger zone for too long, so i used a button.
i nice effect to use these in is making them rise out from lava, it looks pretty cool.

i dont require that you give credit if you use this, but if you want to, my handle is simply 'pez'
i can be reached at jaypeeh1@home.com if you have any requests, problems, questions or whatever.

thanks :]

catch my other 'fabs at http://prefabs.gamedesign.net/author.php3?author_id=430