[ubuntu] Two different mice. What are my options?

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http://ubuntuforums.org – I have a laptop with only a TrackPoint, and also connected to it I have a trackball. Under Windows both seemed to work at the correct sensitivity speed, but under Ubuntu I have to set my speed/sensitivity to 'something' (I mean it's a bar you drag around to change, can't really describe it) for it to be useable (i.e not too slow or too fast) but for the Trackball that speed is way too fast and I can't use it, so I have to lower the speed each time I unplug the laptop and not using the trackball. It's a real drag (ha, get it? Dragging the trackpoint). I tried gpointing devices but I don't (Hardware)