Problem with Razer mouse

This is actually a problem I had with 10.5 that persists in 10.5. I once had a Razer Copperhead working on my 1st gen MBP 17" using Steermouse. At some point I needed to do an OS reinstall, and in retrospect I think my mistake must have been plugging in the mouse before installing Steermouse, but anyway OSX decided I had an unrecognized type of keyboard and I never did get the thing to work and gave up. Now after the upgrade to 10.6 I still have the mouse not working but I now have the need to use it.

Is there a way to get OSX to forget that the mouse is a keyboard and start from scratch? It is actually shown in System Profiler as a "Razer Copperhead Laser Mouse" but without working.