if you chose signup.yoursite.com, enter: signup
Point this subdomain name to host.launchrock.com
Congratulations! Your CNAME record is now configured to point to LaunchRock.
If you have trouble configuring your CNAME records, you can check out the myhosting.com tutorial page. Or, view a sample message to use when you contact myhosting.com for assistance.
Once you've modified your A records, it may take up to 72 hours for changes to update live.