View and Font changes?

[Headhunter]

Anyone know why my view and font change constantly?  I'll be working in ACT! and suddenly everything is either larger or smaller.

[Roy_Laudenslager]

Do you have your video driver set to normal fonts? 

If so, try turning off the hardware acceleration.

[Headhunter]

Thanks for the advice, but I am not quite sure how to check or do that.  Also, would it effect anything else, like watching videos, etc.?