Yes, I would say this section is important. Rather do as 'Moggl' suggests and delete the *.bif files. When you come out into the world again you are at the other side of the castle, next to the ocean, but if you simply skip to there you will have missed out on some information and some VERY interesting stuff.

I get dumped into a nice room below the libaray, by a very helpfull fellow.
When I leave the room, my computer just hates this part, and it crashes.

So I'm thinking, is that part of the game important?
I might use gatekeeper to edit my game so I start somewhere else. But where would
I come out in the world, if I did go thru the dungeon?

Please see Andrarian's post. You've encountered an area that wasn't properly loaded.

Thanks for the help guys. I checked out that post, but I've already tried all the stuff (sorry, I should
have stated that *slap). I guess my little machine can't take the rap.

Thanks anyways.