I had some interference with the Redfly mousepointer and the blueinput (formerly bluemouse) program mouse pointer. I love bluetooth mice and used to be a heavy user but I'd agree that a usb mouse would be alot more of a sure thing, cheaper, availible with more variety an you wouldnt have to use batteries. The Redfly usb is the best windows moble usb. Any usb pluginplay mouse I tried worked.