In this example we're setting up a domain called "example.com" and we want it to point to nanacast.com.

Login to your go daddy account. Make sure your domain is set to use go daddy DNS.  If this is the case you should see a link for Total DNS Control.  Click that link.

Create two cname records:

Enter alias name: www

Points to host name: @

(this cname is probably already in there)

Enter alias name: example.com

Points to host name: nanacast.com

This will resolve both example.com and www.example.com to nanacast.com

See the following screen shots as examples:

Setting up as a sub-domain: 

Setting up as a top-level domain:

Namecheap.com Instructions:

Click on your domain

Chose 'All Host Records' from the menu on the left

Edit/create/delete CNAMEs.

Note: you must add a period "." at the end of the domain in order for it to work, like this: "nanacast.com."