I know how to switch to \"Classic Mode\" (from \"Integrated Mode\") in the full IIS via application pool settings. But I can\'t find how to do it in the current IIS Develope
What version of VS are you using? The reason I ask is because tooling support for integrated mode is only supported from VS2010 up. See comment here:
http://weblogs.asp.net/scottgu/archive/2010/06/28/introducing-iis-express.aspx
http://learn.iis.net/page.aspx/114/getting-started-with-appcmdexe
http://learn.iis.net/page.aspx/870/use-the-command-line-to-run-a-webmatrix-site-or-application/