If changing the settings doesnt work, i would setup vista on another computer, install setpoint, install your mouse, set the prefs, copy the user.xml to your 2008 圆4 machine, restart setpoint and see if the tab is visible. I upped the entire file user.xml that includes settings for my MX1000 and MX revolution from Vista x86 incase the copy your setpoint generated is messed up if you dont have either of those mice, you might have to edit the DisplayName= or the Model= parts but i think you should be able to get it working. If the My Mouse tab is still missing: webcontentproductfaq webproductd49f8154-8211-11eb-a535-83980f91ed82 webcontentid4e086e01-2003-11ee-835f-e772a9087416. also i noticed if you make the 2 numbers different, it just picks the lower number and changes the higher value to match. Click the My Mouse tab at the top of the SetPoint Settings window. Start > Programs > Logitech > Mouse and Keyboard > Mouse and Keyboard Settings. Other numbers could probably be substituted but setpoint will just replace them with the closest number on the list or reset them to default. To customize the mouse button settings for a specific application: Launch the Logitech SetPoint mouse and keyboard software. Select which window the key should display. In the example above, we selected the Application Switcher key. Then select the MK300 from the Select Keyboard drop-down menu. All the speed settings are stored in the Param tag under Device Once SetPoint opens, click the My Keyboard tab.