Hi I found this on ebayhttp://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330684909759#ht_820wt_956 it is a graphics chip... now i was under the impression that it was not possible to upgrade the graphics card/chip on a macbook. I would love to upgrade so I can improve my quality of gaming. This may not do much as the macbook is a 2006 with OSX 10.6.8. The machine is really sturdy and runs great so I'm not really looking to replace it quite yet so I'm hoping you might have some advice if I can maybe upgrade this old macbook. Thanks for any help!