2 joysticks for 1 simulator

As the subject says, I have a little problem I hope you can help me resolve. 
I bought from the net a used AVB force feedback wheel that comes with attached two pedals used for gas and brakes in driving games.
Now, the wheel works well, but the problems began when I tried to assign the pedals to the rudder in FS9 leaving my old thrustmaster joystick in command of the other surface of flight (which is the real reason I bought this wheel). It didn't work.
FS9 refuses to see both game peripherals at the same time (like X-plane instead does, for example) and wants to use one at time only.
My question is, is there a way to make FS9 compliant to my wishes and make it use both thrustmaster and wheel so I can use the pedals for the rudder?
Please help me if you can.

I bought from the net a used AVB force feedback wheel that comes with attached two pedals used for gas and brakes in driving games.
Now, the wheel works well, but the problems began when I tried to assign the pedals to the rudder in FS9 leaving my old thrustmaster joystick in command of the other surface of flight (which is the real reason I bought this wheel). It didn't work.

FS9 refuses to see both game peripherals at the same time (like X-plane instead does, for example) and wants to use one at time only.

My question is, is there a way to make FS9 compliant to my wishes and make it use both thrustmaster and wheel so I can use the pedals for the rudder?

Please help me if you can.
