Window Maker is ugly as sin. No matter what you do to it. FVWM though, is a bit better.
all of the *boxes (fluxbox, openbox, blackbox etc.) can be very pretty. Google search for "*box themes" or "fvwm themes". Most of the themes can be found at freshmeat.
The original link is actually a gtk color theme to match another (presumably released) fvwm theme by the same author. You also need to download and install the rezlooks engine for the color theme to work though. I think that there is some fvwm config file where you can specify where it places the title bar. (Don't crucify me if I am wrong - it may very well be set in the author's theme - but I really am not sure.)