Admin Tool for my ASP.NET website where can I start from?

[hex2001]

I decided to write an administration tool for my ASP.NET 4.0 website that has Membership Capabilities too.I have the business layer ready for the following activities,[*]The number of users logging in to the website per day.[*]Average spend time of the user who is logged in.[*]Pages accessed by the user who is logged in.[*]Frequency of the User logins per month.[*]etc etc.Even though checking the above listed activities is possible by directly peeking in to the Database or Google Analytics, I prefer them to appear them at one place as I have other activities to be followed depending on the data I see from this.I prefer to use charts (open source jquery charts).My concern is where should I start building the admin pages like in the exisiting web application as the users accessing or in a separate web application (is this really possible)?If in a separate web application is possible how could I map the domain to the new web application for admin.