I have Smartscore by Musitek that I just purchased. My mouse will not stay in the edit window. May have it narrowed down to the video card ATI Radeon HD4850. My OS is Windows Vista Home Premium 64 bit. I need to slow the accelleration down or shut it off temporarily to use the program. Nvidia allows you to do it if I am interpreting it correctly, but Radeon does not as far as I know. I need help so I can use my music program. Thank you.