I had this same problem and found this post referenced in another topic, hopefully it works for you. I had to manually input the code in the registry, as the cab file did not work. That could be an issue of the fact that I am running No2Chem's WinMo 6.1 ROM, don't know for sure. What I do know is that it fixed the issue for me. Best of luck...
http://forum.ppcgeeks.com/showpost.php?p=100853&postcount=1