oh yeah
it's an awesome 2d fighter.
I highly recommend it to anyone looking for high quality 2d fighters that are free on PC.
info:
http://www.videogamesblogger.com/2009/07/08/download-free-vanguard-princess-2d-fighting-game-from-ex-capcom-developer.htm
Download:
http://www.vector.co.jp/download/file/win95/game/fh483557.html
http://www.filefront.com/14080411/vanpri101.exe

Is "high quality free 2d fighters" a group that has more than one game? Because all the free fighters I've tried were crap. I think I'll give this one a try...
EDIT: Do you know of any mirrors? Because it's downloading at a rate of 21 kb/s right now...

no, you'll just have to google for it, I can see about uploading it somewhere for you
as far as your other question, I don't really know of any others that are any good. :(
got a 2nd mirror thru filefront
http://www.filefront.com/14080411/vanpri101.exe

Thanks! Oh, I just thought of another cool, free fighter. Someone made a fighter of Les Miserables in the late 90s called Arm Joe. http://www.vector.co.jp/download/file/win95/game/ff392218.html
I'll see if I can find a better mirror for Arm Joe later...