Yes, i get it yesterday, just new to IIS web servers, but thank you. I have another stupid question. :)
Even two questions.
First, now when KooBoo-site runs on IIS service, it looks like losed CSS-tables or what ever controlls it's graphics. Like this:

Second, when i try to acces page not through "localhost' adress, but throught my IP on the internet (it's static, not behind NAT, nor something else), i receive 404 page from KooBoo.
Can't realize, what else i did wrong? :)