Yep a huntsman, found it in the map room (toilet):
http://www.webclot.com/images/Spider/FrameSet.htm
You were unlucky to be bitten, I've been picking them up for years without problem. Spooks the hell out of most ppl.
I didn't think they had any sort of toxic venom, just that they can give you an infection because they eat files that feed on carrion and excrement. I could be wrong, but they seem very timid none the less.
V.