IIS, PHP and ASP ... one big happy family?

How well does IIS work with PHP? Can IIS, PHP and ASP live nicely as one big happy family? I'm thinking of using kamap (ajax mapping api that sits on top of umn mapserver) on a asp-based site. I want to know if that's a good idea. I'm about to try it out... but I just wanna really hear some thoughts about how PHP performance on IIS in comparison to how it would perform on apache... is there any real difference and so on.

I've used IIS and PHP in the past with no problems whatsoever, and you shouldn't come across any performance problems.

You can do it without this, but FastCGI (http://www.iis.net/default.aspx?tabid=1000051) might be worth a look if performance is in fact a primary concern.