hp dv6 switchable graphics

I am test driving a dv6-6135dx (AMD processor) that I bought in the store and have decided to order the same general model from HP with the intel quad core i7 2.0 processor.  I am not very knowledgable about the graphics cards involoved but I know from the reviews and HP forum that the switchable graphics does not work with Open GL.  They are supposed to have a fix for this and I ordered the intel version of what I have now in the hopes that a fix will come out before I have to return it.  How do I know wether or not the switchable graphics is working or not when it comes?  Is there a program that can check to see which graphics card is working?  How do I use the control panel to sitch it to the better graphics card to see if it works?  As I said I am a novice at this and need to know how to check to see if the better graphics card works so I can know wether to return the laptop or not.  Any help would be appreciated.  I am currently using the dv6-6135dx and will be returning it this weekend and was hoping to try your suggestions on this one so I know what I am doing when the quad core arrives.

Thanks! THis has some useful info but I'm still not sure how to know which of the 2 graphics cards is being used when I play a game or run an app.  I have 2 graphics cards in this laptop- one is a low power card and the other a high power card.  Is there a program that will tell you which card is being used during the playing of a game or running of app?