Not too difficult:
• Your databases all get created on the same server, so the new domain can use your existing database. In the Panel for Manage MySQL, Add New Hostname, and you can use that to reference your existing database.
• You can copy an entire directory by Telnet/SSHing in and going to /home/YOU/eandmproducts.com/ and then 'cp -R /home/YOU/clanwrcaa.com/zen-cart-v1.3.7-full-fileset-12302006 .' This tells the system to Recursively copy your zen cart directory to "dot" which is the directory you're in now.
Oh yeah, I just saw the above post and remembered that you will have to update any configurations that point to your old domain.