Mouse Button Mapping

I'm sorry, I should have mentioned that I was actually using Intellipoint for a while, until my brother was telling me his trackball was doing things differently on his Mac without Intellipoint. So I removed it, and actually preferred the way the buttons worked in every other program without Intellipoint, Safari was the only exception. I talked to him about it, and he said once he had used a Mighty Mouse he had more options available in the System Preferences, even when he went back to the trackball (including mapping buttons 4 and 5). So I'm going to try that, Intellipoint just didn't work that well for me. Thank you

I reinstalled Intellipoint, and basically disabled it for all programs except Safari, because it does wierd things in the other programs. This seems like a kludgy way to do it, I'm still hoping the Mighty Mouse thing will work for me (I'll post what happens), I greatly prefer having it in System Preferences without all the extra stuff. Thanks for your time.

It looks like I'm stuck with Intellipoint. I leave it disabled for all but Safari, just wished I could do it with system preferences (why have a mouse item there at all, if you need external software to configure it).