Bounced out. Now what? Can someone help?

New to FSX, former private pilot license (1973), willing to learn and wanna fly sim jets. (Yes!)
However: Loaded FSX, played a few missions and crashed a few planes. Tried to load my game today and got a NEW strange message:
"This graphics card does not meet minimum requirements for shader support. This product requires feForce3/Radeon 8500 class or better graphics card.
Flight Simulator will now exit."
Which it does.
I check my computer on Nvidia just after I loaded and it passed all tests, enough memory, cards, etc. I downloaded Service Pack 1 onto a clean program, then downloaded Service Pack 2. Yeah, okay, i changed a few settings on the graphics, but the game played okay yesterday.
Can anyone help? Much appreciated--in advance! Thanx!
However: Loaded FSX, played a few missions and crashed a few planes. Tried to load my game today and got a NEW strange message:
"This graphics card does not meet minimum requirements for shader support. This product requires feForce3/Radeon 8500 class or better graphics card.
Flight Simulator will now exit."
Which it does.
I check my computer on Nvidia just after I loaded and it passed all tests, enough memory, cards, etc. I downloaded Service Pack 1 onto a clean program, then downloaded Service Pack 2. Yeah, okay, i changed a few settings on the graphics, but the game played okay yesterday.
Can anyone help? Much appreciated--in advance! Thanx!
