This isn't so much of a question as I think I'm OK now but I'm not convinced that the drivers that Apple provides, even if they come from the hardware manufacturers, are as good as they could be. The reason why I say this is that, prior to installing Snow Leopard and Boot Camp 3.0, I had been playing Dawn of War 2 on an ageing MacBook Pro with an ATI X1600 chipset under Windows 7. What I found odd was that after I had reinstalled Windows 7 and used the Snow Leopard DVD to install the Boot Camp 3.0 drivers was that Dawn Of War started to complain that my display drivers were incompatible with the game. Figuring that I hadn't had this problem before I uninstalled the display drivers Apple provided (from ATI) via the Device Manager, restarted Windows and let Windows Update find drivers instead (again, from ATI). This seems to have sorted out the problem. If you are having problems with drivers then perhaps letting Windows Update try to find them may be the answer as this seems to have worked in my case.