There is text all over the site/emails that I don't like. How do I change it in my v3.0 version software?

Problem:

There is text all over the site/emails that I don't like. How do I change it? For example the registration email does not contain the information that I would like my users to see. Also, the weclome text on the home page is not right. ???

---

Solution:

This is fully explained in the support wiki here:
http://geodesicsolutions.com/support/wiki/tutorials/finding_editing_text/start