mouse problem

[cadsaq]

I am working in autocad civil3d 2011. Will working, I must have accidently hit a wrong key and now my mouse is gone. I have my cursor but I've only got my mouse in my ribbon area and my command line. If I got to paperspace and click into my viewport to go to model space then I have my mouse pointer when I move it over into the paperspace area, but only have my crosshairs in my active modelspace viewport. Can anyone help me please?

[tmld]

What happens when you right click in MS ? Does anything open. If so, check the color of your cursor in options>drafting>drafting tooltip settings...