You can do this two ways.
The pitfalls to automatically are it sometimes can actually hurt your chances
at being registered if the automatic service you are using is not liked by the
major search engines.
Beware of the automated services that charge a lot
for their service, as their are many free services out there that are just as
good. If you really want to do it right, you should get a piece of
software that will set it all up and track it for you. Click Here to learn
about such software.