I'm a recent Mac convert, and reusing my good old Logitech MX500 mouse. One thing that I really miss is having Back and Forward set to the side buttons (buttons 4 and 5 I believe). Is there any way to do this? I'd like to have it work at an OS level (in Finder), but I'd settle for just having Safari work too.
I tried USB Overdrive, but that ended up screwing other things up too. I do have Exposé, Dashboard, and Spaces mapped to other buttons on the mouse and don't want to lose those either.