为同一个.NET应用程序使用2个主机名

I need to have 2 domain names that will basically be the same application but with a different theme or skin. I know I can check for the domain name using Server Variables, but how do I point both domains to the same application? And do I develop this like a regular site (with the exception of theming?) Do I just make a regular "Web Site Project"? Also, I only have access to my local dev machine now (I need to have 2 domain names that will basical