I try to build my first ever asp.net application (http://localhost/WebApplication1) with VS.net. When I run the program, I come across the following cryptic message: <BR>¡°error while trying to run project: unable to start debugging on the web server. The server does not support debugging of asp.net or atl server applications. Run step to install the visual studio net server components. If setup has been run verify that a valid url has been specified. <BR><BR>You may also want to refer to the asp.net and atl server debugging topic in the online documentation. Would you like to disable future attempts to debug asp.net pages for this project?¡± <BR><BR>Note that I¡¯m using VS.net enterprise architecture edition with all the web server components installed (of course IIS 5.1 has also been installed on my XP pro). Additionally, I also have specified the url as ¡°http://localhost/WebApplication1¡±. What went wrong? <BR><BR>Thanks for help.