Sorry if this is the wrong place to ask this. I've been using a Panoview Optoma PI-500 monitor for years and it's worked great until a couple of weeks ago when I installed a Geforce 6800GT video card. After installing the video card, the pen input stopped working. I uninstalled my drivers that I got from Aiptek and reinstalled them, but it didn't work. There's supposed to be a little icon of a tablet on my task bar, but it's gone. I've been scouring the internet looking for new drivers or some kind of help, but with no luck. I was hoping someone here could help me out.