go to file->open->website and either select the folder or the IIS instance. Microsoft removed solutions and projects for asp.net 2 to simplify web development (e.g. allowing users to open and run files from the filesystem, utilising vs.net's inbuilt webserver means that theres no need for IIS or frontpage server extensions). This "simplification" is debatable, so much so, Microsoft have started work on an optional addin that adds back in much of the function of sln/vbproj files http://webproject.scottgu.com/ (note: DNN does not utilise this at present - it's in beta and it causes issues with some of our other aims - such as support for visual webdeveloper express)

Cathal

I'm not 100% sure what you mean, but if you're just talking about showing data from an existing database, if it's sql you could use a module such as this or this to query your database (as long as it's sql), and use DotNetNuke to control access and the rest of the content. If you mean integrate with an existing security setup, thats a more involved and difficult process.

Cathal