As one of the many male gamers here, I for one would like to whoop on a woman from time to time.  I'm sure I've come across them already and have beaten them down already as I'm 100% positive I've had my ass handed to me already by a woman.  I like playing against many people, so it doesn't bother me if you are female and kicking my butt.  Skill is skill, my girl can beat me at tennis because she has skill -- I may be bigger, 80 pounds heavier, lift some weights, but her skill is 10X greather than mine.
I played at this LAN party, which was hosted by a couple at their apartment (16 people in a 1 bedroom apartment!).  Our hostess was pretty darn good, but I got the best of her in a few maps (namely q2ctf and some q3test maps).  She wasn't happy, but she did get me in the other maps.
If you seriously don't want to be bothered while playing, then just don't respond -- I ignore all the whiners about my playing all the time.  I have changed my name to Amy once in a while to see what happens and there is flood of questions asking my gender and remarks made about it.  I smile, ignore their words and proceed to open the can of whoop-ass!  Take it all in stride and find some servers with admins that kick loud and unruly players.
vash