MOSS 3.0

Hi All,

Thanks in advance for any help/wisdom you would like to share. I am new to the sharepoint experience and have started up my first site collection with a wiki and blog. The problem I am having now is how I should setup architecturally the site. We are a small IT staff and only want to use it for internal use now with only one log in, such as the administrator account. How would I make this site accessible with an internal and external url and one account Also how can I upload more templates to use and does anyone have an example blog with the different templates Thanks again