Step 1: Right Click any aspx page in Visual Studio > Browse With. This brings up a 'Browse With' Dialog.
Step 2: Click on 'Add..'. I am on Vista and my Crome.exe is in C:\Users\Suprotim\AppData\Local\Google\Chrome\Application\chrome.exe
Type this path in the program name and give it a friendly name as shown below
Click Ok. Once the browser has been added, you can now view your asp.net pages in Visual Studio using Crome.