Just another update on this.
After getting the screen running, I installed the recommended 173 drivers. However, the fonts were looking *really* horrible, then after reading numerous pages on lousy fonts (and trying various "fixes"), something made me check on screen resolution. The screen was down to 1600x1200, and its native resolution is 1920x1200. Neither the nvidia control panel nor the Kubuntu control panel would go higher.
Now the "new" card has both DVI and VGA out, and I was running DVI (isn't that why I bought the card?). What I then did as an experiment was to shutdown and connect the second input port on the monitor to the VGA out on the card (leaving the DVI-DVI connected) and rebooted. The monitor disabled the DVI-DVI connection and used the VGA-DVI connection! Kubuntu then booted in with 1920x1200 resolution and the fonts look cool again.
What a mission!