Trib, there is no rush yet. The longer you leave it the better CloD will be patched up. I can't see it becoming a DangerDogz standard for a long while yet. Getting SLI sorted out is one of their priorities so if you do upgrade I'm sure two GTX 470's will work well.
I've been trying to run this thing on Windows XP for a week or so and it's been a complete waste of time. Last night I upgraded to Win7 64bit and it went very well and believe me I am a computer dunce To upgrade from 32 to 64 bit does mean in effect a clean install so you'll need to save everything you want to keep to dvd's or an external hard drive. I found this very helpful;
http://windows.microsoft.com/upgradeadvisor
Check out the videos too.
I also burnt a lot of 64bit drivers for various things to dvd beforehand. I have to say, after a week of wrestling with massive graphics corruption and the game crashing constantly on XP, it runs beautifully in Win7 and really is a thing of beauty. Well worth the hassle of changing operating systems. From now on it can only get better and better.
I agree not having support for FF is absurd and my Cyborg 3D force stick is now rather, um, floppy but I'm sure I'll get round it or end up buying a cheap Saitek X45 off of evilbay. I think this is another sign of a hasty release.
It's all been a bit of a hassle but it's worth it and I'm getting there. I think we've all forgotten that IL2 has been around for so long now and we've all been able to max it out on our systems for two or three years that there was a time when we had to wait for the hardware to catch up with the game. CloD is now on that path too. The developers now need to patch hell out of it before it's North American release on steam or they're all heading for a financial Gulag.