unable to debug (urgent)

my problem now is errors occur when i try to run my mobile web application project in other computers. i had copied the required files and folder and place it to correct directory. im able to open the project and view and edit the coding as well but when i debug, the error occur- : unable to start debugging on the web server. The project is not configured to be debugged. i'd tried to debug project from other computer in my computer yet the same errors still occur. both computer are using the same software which are visual studio.net 2003 do i need to configure any setting inorder for me to transfer my project to different computer? please help..