I'm doing a project and I have to set up a network for an advertisting/graphic arts company. There will be 3 artists, a sales manager, and a secretary/accountant and 6 or so PCs. I'm leaning towards using a domain because of security, ease of access/control, people can work from home using the domain, etc. What I want to know is if it makes sense to use a domain for such a small company and whether or not it's cost effective.