just installed the pandora game and as soon as I lauch single player mode the game suddenlt stops and goes away. I looked at the configuration and everything looks good except "inadaquatepixel shaper support detected"

post your PC specs.

1.5ghz pentium, 1gig of ram
nvidia quadro 2 pro display
intel 82801ba/bam ac97 audio controller

game will only run in 800 x 600 mode.

Your video card is not supported by the game.

any suggestion on a new video card?

I am guessing you have an AGP slot for your computer. Your processor is fairly slow too. If you want to play games you may want to consider upgrading your whole computer or getting a console. If you do want to invest only in a new video card, it is fairly easy since there are not as many options for AGP slots as there are with the current PCI Express video card slots. Here is a good roundup:
http://compreviews.about.com/od/video/tp/AGPVideo.htm
You will have to decide for yourself if it is worth it to spend the money on an older computer just to play a game. I have an AGP computer and decided it was not worth it to upgrade to play SCDA. $50 for the game plus $200 for a video card to play it? No game is worth $250 to me. I will upgrade my computer some day but cannot afford to right now.