I have a IIS server running on windows 2003 named Foo. Now I want to create a new IIS server running on windows 2008. My Idea is to slowly move the applications over to the new server while having both servers in production. In order to do this I need to redirect all traffic from the new server where the pages don't exist to the old server. Is this possible? Lets say that I haven't moved over FooOld/Bar/page.asp?id=10, When the user tries to access it at Foo/Bar/page.asp?id=10 I want the server to redirect this to FooOld/Bar/page.asp?id=10. If possible the user shouldn't even see that it has been redirected it should still see Foo/Bar/page.asp?id=10.