Is there a particular way I need to do to redirects with the multi-store version?

I setup two stores www.store1.com and www.store2.com in IIS and Nopcommerce admin tool. I set up "A" product category only for store 1 and "B" product category only for store 2.
After completing all steps which I follow from this link http://docs.nopcommerce.com/display/en/Setting+up+Multiple-Store, when I accessing www.store2.com from my browser, the content of www.store1.com is displayed - "A" category, not "B".

Could you please help me to find what did I miss?

Thanks!