Advice on changing graphics card in a triple boot?

[struggle4progress]

I have a machine with SL, as well as Vista and Ubuntu (under bootcamp), on which I want swap out a graphics card. I'm assuming I may need to download and install new drivers in all three OSs before the swap. Is there anything else I should think about, besides the ever-present Murphy laws?

[struggle4progress]

1. Report:

I installed OSX and Vista drivers in advance of card insertion without incident. Ubuntu, however, prefers not to use proprietary drivers and the easy route to proprietary driver installation through "System >> Administration >> Hardware Drivers" doesn't appear to be available for uninstalled hardware. Browsing the web suggests that Ubuntu has OK, but not great, open-source drivers already for the card so I just installed the thing without finding the proprietary drivers

I installed beside an existing card in hopes of minimizing my headaches if the card didn't work.

Rebooting into OSX and Vista went OK with the monitor attached to the new card. Reboot into Ubuntu was slow and the desktop never appeared: the system repeatedly tried adjusting the monitor, gave up, asked if I wanted to try low graphics mode and gave me some other options like reconfiguring; I opted for various efforts at low graphics mode before shutting down; this might have been a configuration issue, since the logfile indicated that console 0 was in use by another process and hence locked against access. Rebooting with the monitor attached to the original card was successful; the "System >> Administration >> Hardware Drivers" route to installing the recommended proprietary drivers was successful because Ubuntu correctly detected the card; rebooting with the monitor still attached to the original card was slow, Ubuntu finally giving up on console 0 and trying console 1. Rebooting with the monitor reattached to the new card then proceeded without incident

Everything might have gone more smoothly if I had either (1) thought through editing the configuration file or (2) just pulled the original card before inserting the new one -- leaving it in may not be a great idea, since the new card sits pretty close to the fan intake on the old card, and so there might eventually be some thermal issues with the old card

[struggle4progress]

2. Further remark:

Air circulation near the original card was blocked by the new card; while I was examining some Vista stuff, with no obvious load on the original card and the monitor plugged into the new card, the original card became so hot that Vista shut it down. So I removed it

The Mac Pro is a nice machine but air flow in the box has not been carefully considered