Just skip the cname thing and create a new A record for your subdomain.
sub.domain.com A 66.6.21.144
Personally I'd move my shit off of Godaddy and to a registrar who won't auto bill your credit card by default, add a ton of shit you don't want or need, make you click through a ton of sales bullshit to register a domain and one that has normal DNS handling that isn't built for the avg godaddy client / retard.
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-= Software / Systems Architect and Server Geek =-
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