hosting mutiple sites on IIS6 windows server 2003

Hi I have 2 domains , egmahdi.com and 4xstats.com The first domain which I bought was egMahdi.com , I set the nam开发者_运维百科eservers to ns1.egmahdi.com and ns2.egmahdi.com , after that I used the DNS server in my VPS and IIS for hosting the site and there were no problem , I just registered the second domain '4xsttas.com' and made the same steps I had done for egmahdi.com (in DNS server and IIs ) but now the problem is that I can not access the new website and my browser always says 'website not found' , But I can access the website when typing it's address in my VPS' Browser , I would really appreciate it if some one help me solve the problem . really thanks .

4xsttas.com does not resolve for me. If you ping it the domain name, what happens?