yes, you did what you were supposed to to. But the room should open, instead of blocking you.
it's an extremely huge level, so it may take a minute or so to load all the extures. t's tested on GForce 4, ATI Radeon. The graphic card should have 128 MB. GeFoce 2 would load the level - and when everything is read in, it would even run. But it's no fun with a frame rate of 5 fps.

A GeForce 4 and a RAM of 512 is fine, it should run without any problems.

On thing to mention is: I have added the ogg DirectShow Graph of Tobias Waldvogel (having used intensively ogg files to diminuish space), so you should run this first. - But t shoudl even run when the DirectShow graph is not isntalled (in a mute state).