You can create A records from the Advanced DNS Settings area of the Domain Control Panel.
Please note: Any changes that you make to your advanced DNS settings can interrupt your service. If you are not an advanced user, we strongly recommend that you not change these settings.
To access the Domain Control Panel:
To create an A record:
You'll return to the "Advanced DNS Settings" page, and your new A record will appear in the A and CNAME records list. While your changes will appear in the name servers within minutes, please be aware that it can take up to 72 hours for new records to propagate to all name servers on the Internet.
Note: Yahoo! allows you to create multiple A records for the same host name. You might create multiple records for a strategy commonly referred to as "round robin." If you don't wish to create round robin A records, delete the extra records.