No one said you ATI users would have problems, just that you can't see fog. I guess if you've never seen it, you don't know what you're missing. We Nvidia users can pretend we're ATI users by turning off the fog in the game, then scratch our heads when our LOS markers extend 20m on a perfectly (apparently) sunny midday battle, then turn it back on and snicker.
It is unheard of for any competent 3D API maker to NOT be able to display fog. This is my biggest gripe with 'em. They've only recently learned how to actually code drivers (within the last year)... And people wonder why they're seen as a second rate company (at least by those with a memory).
I second the opinion above... F' em.