are you trying to run ASP or ASP.Net? They are 2 very differnt things.When you are in IIS manager expand the treeview until you see a node that says Web Server Extensions or somethign similar.Click this node once. You should get, to the right, a list of extensions saying either allowed or prohibited.If you are running ASP.Net then that extension must be allowed if you are running Classic ASP then the extension named Active Server Pages must be allowed.