If you're following the current EQ2/nVidia 8800 continuing saga, here's an update:
nVidia finally contacted us (after seeing my previous blog post i might add). We're working with a technology evangelist there to get the problem resolved.
Since some people mentioned not having issues with Vanguard: Saga of Heroes, I started chatting with the VG team about ideas. Unfortunately the ideas that they've given me so far haven't panned out, but there's more to try.
Between both of these, we're definitely working on a solution. I'll keep you posted.
Update 4/16/2008: See latest update