No mouse input

[BUkkler]

I just purchased Cryostasis, installed, then patched to v1.1. Installation, option selection and game start went fine. Graphics and movement are smooth, however, the game doesn't appear to accept mouselook input in-game. Movement controls are fine. I'm using a Labtec wireless USB mouse. I certainly hope this isn't a USB issue, because my ASUS Rampage Extreme mobo has no provision for a PS/2 mouse. Is there a fix for this? Looking at the sky is getting old. Thanks.