I try to visit as many IIS7 places as possible. One item mentioned not in the IIS7 GUI is how to add MIME types. Well, I couldn't figure how to add them but I can 'read' them from my Vista RC1 machine. How to add will be in another posting. This code below doesn't build a list, but gives the basics for reading the values stored in the applicationHost.config file. Happy IIS7 geeking!
Dim sm As New Microsoft.Web.Administration.ServerManager()
Dim appHostConfig As Configuration = sm.GetApplicationHostConfiguration()
Dim section As ConfigurationSection = appHostConfig.GetSection("system.webServer/staticContent")
For Each element As ConfigurationElement In section.GetCollection()
Dim fileExtension As String = element.Item("fileExtension").ToString
Dim mimeType As String = element.Item("mimeType").ToString
Next