It seems the PCI NVIDIA cards and PCIEx16 cards use different drivers. Trying to anticipate if there will be a problem/if it will be possible running PCI 400 and PCIeX16 450 in the same machine. Can I install both the driver for the 400 PCI and the driver for the 450 PCIeX16 to run a 400 and 450 without problems? OR will the driver for the 450 also handle the 400 without problems What scares me about buying NVIDIA is that no human contact with NVIDIA is possible. I would have thought this would be a FAQ but their FAQ/Forum does not address it - leaves you with no answer to this question. Why can't I just send them an emaail to ask this question? Puts me off buying from them I have formed the impression from ET that running NVIDIA and ATI (FireMV2200/2400) in the same machine is not doabale - driver conflicts Would also like to know if NVS 400 will run under Windows 7 - at some point I want the 64 bit when it is better supported.