i'm using keyboard to play SF, but recently i bought a controller.

those who using standard controller - 4 buttons on front (with R1, R2, L1, L2 on side)
Example standard PS3 controller, XBOX 360 controller, Logitech Rumblepad, etc.. (not Mad Catz controller with 6 buttons on front)

how u assign your button?

A/1/rectangle - Light Punch
B/2/circle - Medium Punch
C/3/square - Light Kick
D/4/cross - Medium Kick

R1 - Heavy Kick
R2 - Heavy Punch

L1 - ??
L2 -??