If you're talking about R1 on the PlayStation controllers, it would be RB on Xbox 360 controllers. If you want to know where it's at on the actual controller, then go to this link:
http://www.Google.com/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/thumb/2/2c/360_controller.svg/450px-360_controller.svg.png&imgrefurl=http://en.wikipedia.org/wiki/Xbox_360_Controller&h=208&w=450&sz=34&tbnid=DQhz4D9o6UWpxM:&tbnh=57&tbnw=123&zoom=1&docid=Qal9nQrbhIWzaM&hl=en&sa=X&ei=RZO5T-6lJ4OI6QHimqn7Cg&ved=0CGMQ9QEwAA&dur=1958
on top of controller
If you are interested in climbing a ladder in WWE 12 for Xbox 360, you need to hold down the L1 button while pressing the x button. This will allow you to jump and grab onto the ladder.
L1 usually refers to the left trigger where your index finger rests while holding a controller. The LB is the bumper which is the button directly above each trigger.
For the Playstation 3, press L1. For the Xbox 360, press the same button in the same spot as the Playstation 3 :)
Hold L1 in front of a taxi
On the 360 ~ you HOLD the Y button. (so whatever button you use to steal the car, Hold it in instead.)
Press R3 on PS3, click the right stick on Xbox 360 and press z on PC (default).
On the xbox 360 you press and hold LT on PS3 you press and hold L1.
It is the button on the top left, sometimes called the bumper, it above the left trigger
l1 and r1, play around with that and press y sometimes while your doing that
When equipped, the IR Flares specialization adds infrared flares to aircraft, deployable with the countermeasures button which is x by default on PC and Left Trigger or L1 on PS3 and RB on Xbox 360.
ps3- x,o,x,o,L2,L1 xbox (360) - A,B,A,X,R3