Hi, all:

 

I have a 600m.  I bought a Dell mouse from ebay.  When I plugged the usb optical mouse, the mouse is just not moving at all.  Then, I put a stack of paper under the mouse.  It got a lot better.  Before I had this optical mouse, I used a mouse from my ibm thinkpad t40.  that mouse worked fine.  I don't need any mouse pad and sensitivity is good.  but with the new dell mouse, the sensitivity really is really bad.  even with the mouse pad, it feels it responds slower than the ibm mouse.  any ideas how I can change that?

 

thanks

jw