The hack that Spirit mentions above is documented in greater detail here...
Beware - You do this at your own risk. These graphics cards are not on the white-list for a reason - they are not considered stable enough in After Effects yet. If you are using a Kepler-class graphics card, as Todd Kopriva puts it "Cards not on the whitelist may fail, and fail badly."
As for the Quadro 600, the link above says that it will work if the card has at least 1GB of video RAM. Yours is just short, Cyzer... so who knows how it will behave.
Here's a detailed discussion from the Adobe forums.