If you read this blog, you've probably seen the articles I've been posting about hex maps. I've just finished off the beta release of Ground Rules, a web-based hex map generator based on the tables I've been talking about. It's a bit rough around the edges, and not fully tested yet (thus the beta designation), but if you're interested, it's available here:
I'd greatly appreciate hearing from anyone who tries out the system. Feedback here as comments, or via the web comment form on the PBE Games site.