Thanks for the help. Fantastico was just what I needed.
I think I am making progress. I found and downloaded php and created a list. I figured out how to import the email addresses of our team members and parents and I've been through all or most of the various control links to figure out how the php program works.
Now, I have a new question. The system is set up for me to send out newsletters. This is not what we want to do with this list. I want group members to be able to use the list to send emails to everyone on the list. So, if someone sends an email to all@huronrowing.org, everyone on the list will receive the email. I don't think this is the default set up. How do I make this happen?