Godaddy : linking domain name to IP address
Solution 1:
You will want to add an A-record for your root domain (mydomain.com)
And if you want to get fancy, also add a CNAME (www.mydomain.com) subdomain
There are two steps, and GoDaddy has hard-to-find articles. Reposting text here:
ADD AN A RECORD
An A (host) record connects your domain name to your IP address. A records let users enter your domain name in a Web browser to access your website. They are the most common type of zone record.
Follow the directions to access the DNS Manager.
Click Add Record.
From the Record type list, select A (Host).
Complete the following fields: Host Name — Enter the host name the A record links to. Type @ to point the record directly to your domain name, including the www.
Points to IP Address — Enter the IP address your domain name uses for this host record.
TTL — Select how long the server should cache the information. Click OK, then click Save Zone File. The new A record displays in the A (Host) section.
https://www.godaddy.com/help/add-a-cname-record-19236
ADD A CNAME RECORD
A CNAME (Alias) record points to an A (Host) record. You can create multiple CNAME records and point them to an A record. The most common CNAME records are the subdomains www and ftp.
CNAME records make your DNS data easier to manage. If you change the IP address of an A record, all CNAME records pointed to that A record automatically follow the new IP address. The alternative solution, multiple A records, is not as simple as using CNAME records.
Follow the directions to access the DNS Manager.
Click Add Record.
From the Record type list, select CNAME (Alias).
Complete the following fields: Enter an Alias Name — Enter the subdomain name for the alias assignment. For example, type www. Points to Host Name — Enter the host name you want the alias to point to. For example, type @ to map the alias directly to your domain name.
TTL — Select how long the server should cache the information.
Click OK, then click Save Zone File.
You can click Restore Defaults in the CNAME (Alias) section of the Zone File Editor to restore the default CNAME records for your domain name.
https://www.godaddy.com/help/add-a-cname-record-19236
Hope this helps, if you still haven't figured it out since 2010!
Solution 2:
Does this: http://help.godaddy.com/article/666 help?