Cutrara

Hi, I'm trying to map the push of my powermate to the play button on RR. I messed around with girder for a few hours, with the RR.GML. I get to the play string, and I hit F5 to test it, and RR plays/pauses. But no matter what key I map it to, nothing happens. I messed around in KeyTBL.ini but I can't get that to work either. I tried searching on here and google. I'm using RR with the CFX skin, and WinXP. Thanks.