I just tried to play a Quest game called Attempted Assassination from Baf's Guide and got a message saying that "net.lib" couldn't be found. The game wouldn't work.

Any idea where I find "net.lib"?

Isn't that the (old?) Questnet library?
I would have thought it's included with Quest by default... *shrugs*

Well every other Quest game I've tried has worked fine, just not this one.