p.s. I logged out after installing the nvidia drivers, and used applications>System tools>nvidia X server settings to get dual monitor working. The panel autodetectedd my monitors fine. I clicke 'x server display configuration' and then 'configure'. choices are 'disabled', 'separate x screen', and 'twinview'. I at first thought I wanted 'separate x screen', but that's wrong, I'm still not sure what it was doing. Anyhow, I could not move anything between monitors in that mode. So I tried twinview, and now the two monitors are acting like one big monitor and I can move stuff back and forth. I would never have chosen the name 'twinview' for that, since they are not twins at all. Dave