Debug Request Could Not Be Processed By the Server Due to Invalid Syntax -
look in %TMP%\Visual Studio Web Debugger.log
for clues
directory, create - Creating a directory using ASP.NET 2.0 and VB .NET
Tools → Options → TextEditor → All Languages → Line Numbers check box available under Display section.
port, specify - from here
or, right click the the project in question, go to Property Pages. In the Start options change Start URL.
Tutorial - Step-by-Step ASP.NET Tutorial for Beginners