Domain name of Go Daddy

I just bought a Domain name of Go Daddy do i need a host

from

http://irishboards.forumotion.co.uk/
to
http://irishboards.info

please and thank you

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oh when i press on irishboards.info it goes to my forums but the url is still
http://irishboards.forumotion.co.uk/

but when i enter the .info url in admin panel it give me this error

Error

The supplied domain name is not well configured
Your CNAME must redirect to : irishboards.forumotion.co.uk

what is CNAME

Godaddy >> Log in >> Domain Management >> DNS Manager >> Launch >>
Find CNAME, click quick add
Host: www points to: irishboards.forumotion.co.uk
Host: irishboards.info points to: irishboards.forumotion.co.uk

Wait up to 24h!
After that, "enter the .info" with www

TBH i don't know how to do that,would anyone out there do it for me please