You might be interested in this little convention: http://sophia.smith.edu/conbust/info.html It focuses on women participants in gaming, sf, and other geeky pursuits.

I don't know how big it is, as I haven't been before. I suspect it won't be terribly large, being a student-run convention, but it's nearby enough that I thought it would be a good thing to support, and wrote to them offering to be on programming. I'll probably have a blog with a full report on my LJ page after I get home.