is there a way to use two mouse buttons for one action?

spinnerlys

Hello.



I have two mice, one Mighty Mouse for my MacBook, and an old (seven years) Logitech optical Mouse for my iMac.



As I really like the fourth button on the MM for accessing Spaces, I would like to do so with the Logitech mouse too. (I haven't found a better mouse yet with a good set of buttons that are easily reachable.)



So is there a way or an application to assign the right mouse button with the click wheel to one action or a software?

I want to press the right mouse button and then the click wheel so I can access Spaces, as the click wheel alone is there for showing all windows via Exposé.



Or is there a way to script this?



I already tried USB overdrive but it messed with the click wheel and it has no option to assign one action for two buttons.



Thanks i advance...