I have a Microshaft Wireless Notebook mouse I use with my iBook. After getting my intel iMac and using the mighty mouse I love using the 3rd button to bring up expose. Basically do what F9 does, I have tried setting this up in expose but it does not recognize my 3rd mouse button at all. Is there a fix for this? I installed the Microsoft driveres but that did not help any. I also tried USB Overdrive but being it costs 20 dollars I'm going to stay far away. Thanks for the help.