Click on the Domains Icon in the middle of the screen.
Click on the small wrench icon to the right of the domain you want to forward.
On the left hand side, click on Name Servers
Select "Use Default Nameservers" and click the Change Nameservers button.
Click "DNS Management" on the left hand side
Select URL Forwarding .
Leave the Hostname colum as is.
Change the Drop Down to URL Redirect in all 3 places
In the Address Column enter the full URL you want to forward too in all 3 spaces. For Example: http://www.mynewsite.com (Notice the http:// is included)
Leave all the other boxes as is.
Click Save Changes
In 4 - 6 Hours your domain changes will have propagated across the
internet and the domain name will start forwarding to the new site.