on the mouse control panel's dialog, hardware tab, what does it list?
Does it show the mouse as attached to the usb? it should. it may show
the touchpad too.

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IP 5.4 will work w/ that mouse, and seems a bit more stable. it also does
a good job of removing any remnants of a previous driver, which in the
past caused all kinds of problems - 5.4's installer is solid.

Try it:

http://www.softwarepatch.com/utiliti...llimouse5.html

note: finding 5.4 on the ms site itself can be a bear; above link is a
good one tho...