USING THE 600M
Much like the 700M the 600M doesn't come with a driver CD so you will have to check the official COUGAR support page to download the latest available version.
The COUGAR control panel (AKA UIX system) gives plenty of freedom to the user so from here you can adjust the 4 available DPI presets, adjust the DPI for the sniper button, change the lift height (LOD), adjust the polling rate, turn angle snapping on/off, adjust the double click/scroll/pointer speeds, program all 8 buttons to the desired functions (macros included), change the illumination color and save/edit all the available profiles.
Again just like the 700M the 600M has a very limited illumination system (some will like it and others will not).