Ok, so it was about half a year ago I last tried WINE.
At that time (I think it was wine 1.2rc1) was able to run MW2, which is pretty amazing, if you think of all the work that takes.
The bad news is that it was like 10 fps in 800x600, low quality vs. fluent in 1600x1200 high quality.
I might have improved, I am sure it has, but now it is too late.
November 9., Black Ops will be available and I am sure that THAT won't work for another 1/2-1 year.
I am not saying that wine is bad or that they are doing a bad job.
They are doing an amazing job.
It's just mission impossible, since they are trying to hit a moving target.