My current macbook is the only mac that I've had except for this old iMac G3 that used the hockey puck mouse. I've had it for about eight months now. but the other day I got a mighty mouse and I'm kind of annoyed how both side buttons can only do one thing (I have it set to open expose). In 7th grade I took a weekend class for iMovie at central campus (alternative class thing in my school district) and I swear that on the iMacs there I could press the left side button and open expose, the right side to clear the desktop, and both to open dashboard. Can I do this?