So you’ve updated to Lion. Good! It’s lovely.
Now, we all love the brand new application desk known as Launchpad but is there a smooth way to open it if you’re on a regular 2-xx button mouse? Of course!
Opening the Launchpad with a mousekey
Launchpad is an application available in the applications folder. To be able to open it with a mouse key like the scroll wheel button you need a plugin like USB Overdrive (http://www.usboverdrive.com/USBOverdrive/News.html).
This way you will be able to open virtually any application with a mouse key.
Have fun

