Logitech's mouse software is called SetPoint and is a hefty 15.7 MB download. It's also included on the CD.
On the first page you can customize the mouse buttons by selecting an action from a predefined list. "Keystroke Assignment" lets you put a key combination on a button. It would have been nice if you could bind macros ie. series of keystrokes. Also it is not possible to assign the tilt left/right of the mouse wheel. Another nice feature would be if you could select which mouse button will be pressed when "generic" is chosen.
When selecting "Other" in the buttons screen you get an additional selection:
On the second page you can control various aspects of your mouse pointer movement. This is all pretty similar to what Windows offers in its own mouse settings.
"Smart Move" is the same as Windows' "Automatically move pointer to the default button in a dialog box".
What I find important to note is that the "Pointer Speed" option value is added to the Window's setting. So when you have Window's setting set to maximum, you can increase the pointer speed even more by changing the option here.
The battery display is pretty useless. The mouse has the LEDs.
"If you need help changing the batteries.." - I didn't know I could change the batteries on the MX1000 ;)