deploying web application to Windows 2003 server

Good Day,

I have created a web application in Visual Studio Web Express 2010 and it runs as intended on my local PC. When I publish it, by way of the "File System", to a virtual directory created on the server, I get a crapload of Web.config file errors. The server is running Windows 2003 with the 3.5 framework. I do know I have the 4.0 Framework on my development PC. Besides installing the 4.0 framework on the server, is there anything else that needs to be done?

thanks