OK, I have replaced the GeForce 6200 video card that had unresolvable driver issues with a new Sapphire HD3850 card, and installed the latest Sapphire-sourced ATI (Catalyst v.9.9) driver.
One thing that changed with the GeForce 6200 that, regrettably, remains with the new card is that I can no longer open more than one drawing at a time in my AutoCad 2008 drawing editor. When I go to open a second drawing, AutoCad first closes the one already open before loading the second one. I miss the multi-drawing feature, and wonder why I could do it even with my original GeForce MX200 64K card, but cannot do it with EITHER of the newer 512 MB cards. Is this a video driver issue, or an AutoCad option setting, or just a feature not supported in the cards?
I really miss this useful feature, and hope it's just a setting that I can change. Ideas?