Domain Mapping Help with IP, A Record and CNAME

I have installed domain mapping following all the instructions. The issue I have is that my BP site is not the main domain I set up with Hostgator. I've logged in and can see where I can edit a domain (Simple DNS Zone Editor) in my account with A and CNAME records for individual domains. Looking at the list for this domain, I can see an A record that says "localhost" with a record number and several CNAME (www, ftp, mail). But I don't know what I'm supposed to put as a name and address for each to allow for domain mapping. Can anyone help?