When creating your two subdomains in your Cpanel, the folders should have been created automatically (based on the names you supplied, of course). So if everything went correctly, you should now have a folder on the server something along the lines of of this: public_html/subdomainname. There would be no .org or anything. When you hit the Publish icon, you would publish your page to public_html/subdomainname. Then, when you wanted to see your page on the web, you would look for
www.subdomainname.maindomainname.com (or whatever you have instead of .com).
http://www.subdomainname.maindomainname.com (or whatever) is what you would put in your links.