Logitech has not released a version of Control Center that works with SL but you can assign Exposé functions with SL's Exopsé & Spaces pref pane.
First, change your mouse button assignments in the Logitech CC. Make them Advance Click buttons numbered 3 and up. Then in Exposé preferences, assign All Windows to Mouse Button 3, App Windows to Mouse button 4, etc etc.
I use the VX Nano and this works just the same.