BTW answer to my own question after about a half-hour of looking around, the following did it for me:
/bind shift+0 "speed_turn 6"
6 = 600%
Kool. Glad you found your answer.
Sorry we didn't pipe in to answer you but I guess we just didn't know the answer to that one. It's not something that's ever come up for me personally.
Thanks to you I'll have this answer ready for the next person who asks though.
I switch from my laptop to my pc constantly and I need to keep adjusting the sensitivity for turning and moving. This would be way easier if I could bind it to a key. Does anyone know what the command would be?