if u are an W A S D gamer and not arrow gamer, u can modific some binds in cfg like
bind CTRL
bind SHIFT
bind DEL 
bind PGDN
bind PGUP 

with your binds like
bind C
bind X
bind Z
bind F
for example.

!!IMPORTANT!!
If more 250 fps dont work watch this video tutorial: http://www.youtube.com/watch?v=m3EqQon0jNQ&feature=player_embedded

Have fun with config ;)