Tired of constantly holding down right-click to look around? Use AutoHotKey, and create a script like this (I copied it from another person that did something similar for another game) ;
alt := not alt
MouseClick Right, 217, 51, , , D
MouseClick Right, 217, 51, , , U
Now, all you will have to do is press Space to toggle between mouse look and interaction. Sure, you still see the cursor while looking around (if you are not walking of course). But hey, its better than nothing I guess!
If someone comes up with a better script, please share it with us.