I believe setting up was like this:
Run LFS in single mode,run Tweak,load your desired settings. Then leave single player mode,start a new host from your LFS without shutting it down,share Tweak's settings with a mate,he must run Tweak and load these settings and then he will be able to join your server.
Never actually tried this,only red somewhere instuctions...
Talking about the slickmod - is there any for the new patch?