Pretty much all of the quests added by TotSC are centered upon Ulgoth's Beard, and Durlag's tower to some extent. Your best bet is to go to Ulgoth's beard itself, and be nosy

Explore, talk to people, interfere. That should pretty much get you going. [img]tongue.gif[/img]
The Ulgoth's Beard and subsequently added quests can be completed at anytime during the game, but reloading your final save doesn't transport you to Ulgoth's Beard. Unfortunately, you have to travel back out of the underground city, up through the theives' maze, and out towards the entrance of the city and head northwest towards Ulgoth's Beard. If I remember correctly, installing the expansion should just put Ulgoth's beard on your map. If it isn't on your map, try going to the bridge map, and exit that map from the north border. It's been a while since I've played BG but that's the best i can remember.
[ 11-18-2003, 12:43 PM: Message edited by: ryaldin ]