as Cshude said... I use my efx board for tremolo... ive got a strat copy... and had a play with the whammy bar, but got sick of retuning every time i used it....
The action on my strat, doesnt seam to allow me to bend UP with the whammy only down, not to say there couldnt be something wrong with my "student" package strat copy, but i dont know, perhaps somebody has a better idea than me. I never use the damn thing anyway, its sitting here on my bench under a mound of paperwork somewhere.. which i really should get round to doing one day
Matty