1. dunno

2. dunno, but if you intend to use it for SLI it would not be needed for WoW as that doesn't really add much.

3. I have never had any trouble with my dual monitor setup with Vista. Is it possible this refers to a very specific problem/conditions?

4. If you are not going to use it for SLI, I think it will work fine. Although I have not tested this personally I have not read anything to the contrary. I think what is still the case (was always the case) is that a videocard is better at sending 3D to just one output on a big monitor then several small ones with multiple outputs. Even though the net. number of pixels is the same.

5. Raid 0 is usually significantly faster then a single sata disk. For the fastest loads of wow you could put windows on the single disk and wow on the raid disk. I am not sure how significant the difference is if you just put windows and wow on the same disk but I reckon it would matter. Do you use onboard raid? Or do you have some kind of raid card with dedicated processor en memory? if the later is the case you can put both windows and wow on the raid.

I hope this helps and I am sure other can add to this.