I purchased the top end Mac Pro only to discover that the ATI Radeon HD 4870 Graphics card may be a great card, but like most ATI products has crappy software support. Sooooooooooo after many, many hours of discovery time by myself and Autodesk Maya support we finally discovered that the video card was my problem. So I went to Apple and they sold me an additional video card to install since it has stable drivers that support Maya (or the other way around) ... well it was closing time at Apple so they said I could just plug it in myself. When I got back to the studio I discovered that there is no driver cd so I started searching the internet ... well it seems there are not downloadable drivers there either since this is an OEM video card! Help ... has anyone else encountered this problem? I have a ton of work that I need to do and it is a holiday weekend ... heellllllp lol.