Bought the NVidia 8200gt for my 1st gen Mac Pro from the UK store. What they neglect to tell you there (which they do on the US site) is that it only works with 10.5.2 . http://store.apple.com/Apple/WebObjects/ukstore.woa/wa/RSLID?mco=MTM5NDY&nplm=MB560 Does anyone have any idea if there are drivers available for Tiger or am I stuck? I mainly use my Mac for music and alot of my music software is Tiger only so have to keep my tiger partition. I use a windows partition for gaming and the 8200 works fine there but I have to Physically swap over the graphics card when I want to go down that route, which is inconvenient to say the least. I am pretty annoyed with Apple for not having correct information on their UK site but am loathe to return the card as I do use it under windows. Thanks For your help.