Q: A how to get a course into iTunes U Campus

Perhaps the documentation here will help, if you haven't already seen it:

http://sitemanager.itunes.apple.com/help/#Introduction/chapter_1_section_1.html

If not, post details about the difficulty and someone here may be able to offer suggestions. You can also contact iTunes Support via this web form:

https://ssl.apple.com/support/itunes-u/public-site-manager/contact.html?form=psm &topic=Public%20Site%20Manager%20inquiry

Regards.