I've just installed Fedora 18 on my new home workstation, and I'm using a 5-button mouse (technically 7-button, if I understand correctly that wheel-up and wheel-down are treated as buttons). Everything is working well enough, but the two thumb buttons have been mapped to "Forward" and "Back" -- the problem being that my brain is hardwired, from years of practice, to treat them as "Double-click" and "Close current item". If I could get even one of these bindings back, it would be fantastic.
I looked at the documentation for xmodmap, but I can't see anything that indicates an ability to bind mouse buttons to custom events (though you can do things like swap buttons around and customize keyboard binds). Anyone got a clue on where else I could look, or what I could do?