To set up Microsoft Intellipointfor program-specific button , double-click the Intellipoint app (in the tray), and under the 'Buttons' tab, check off 'Enable program-specific button settings'. Then, click on the 'Settings' button to bring up the Advanced Button dialog. Under 'Programs', click 'Add' and browse to the ProE executable (\i486_nt\obj\xtop.exe) and add it to the list.
Enable the settings for each mouse button to the right of the 'Programs' list for each application. A favorite is to add the CTRL button to either the left of right side button, depending upon whether the user is a lefty or righty, to allow one-hand spinning. I'm a lefty, and I also added a 'zoom refit' mapkey to F12, and set F12 to my left side button, so I can resize with one click.
Intellipoint will use the default setting on the main 'Buttons' tab for all other apps, so when in IE you can still use the keys for backwards-forwards.