Hello,
What you are trying to do is not a supported feature. The Internet Toolkit and the G Web Server for LabVIEW was developed and tested for its use under Windows only. R&D has not tested it running on an RT target. You might be able to load and start the G Web Server on RT, however there might be some files that you need to copy to get it to work.
The G Web Server is what you should try to use. The server comes with the Internet Toolkit. There is no way to use CGI directly with FieldPoint without the G Web Server. I am not sure what you mean about not including any VI when using CGI. There is lots of information here about the Internet Toolkit
http://www.ni.com/support/labview/toolkits/
internet/. Once it is installed there is lots of documentation that comes with it.
Good luck with developing your application.
Jared A