Official City of Buffalo Web Site.
Greater Buffalo Convention Center and Visitor's Bureau Web Site.
YAHOO! City Pages for: Amherst, Buffalo, "Buffalo Get Local" (with a clickable zoomable map of downtown---see note), Niagara Falls, USA.
YAHOO's Pages on Touring Niagara Falls: USA Side, Canadian Side
Buffalo And Beyond: A Virtual Tour of the City, brought to you by UB.
ArtVoice and Buffalo Beat are two cultural magazines with much WWW material, while Buffalo Music Online, Virtual Buffalo, and Buffalo Welcome Magazine have information and calendars of events.
Alan Selman's Recommendations (with further links).
Bill Rapaport's Restaurant Guide.
Ken Regan's Essay on Buffalo (with cultural links).
My conference notes also have some to-do links.
This includes an Interactive Map of Amherst that is fun to play with (if your connection is fast), but IMHO not good for telling you what you need to know, quickly. I will try to provide something more tailored to CCC'98 visitors' needs.