MOSS 2010 virtual path to ASP.NET

I am attempting to host an ASP.NET applicatio开发者_开发技巧n inside of my SharePoint site. I want to host a full-application so I'm hoping to run it as a virtual path application.

Following instructions mentioned in other areas around the web, which said that I could go into ISS and create a virtual path inside of my SharePoint site to run the application. Link (page 4)

After finishing this portion I began getting asked for credentials. I got rid of the credentials request, by browsing to the folder containing my Virtual Path and changing security settings to allow iUSR_ account. I no longer get credentials, but I now get a blank page.

I don't know how to get passed this blank page issue, any help is greatly appreciated.

Background: I realize that I can run an application in the layouts folder, but it doesn't seem to work the same as it references .cs files that should be in the code-behind.

-Update-

The blank page issue is solved if I convert the virtual path to an application. However, it seems that I can't piggy-back off of the SharePoint's user credentials when it's an application.

Have you checked that the AppPool for the MVC site is running as the same user as the sharepoint webapp?