As Microsoft Office SharePoint Server (MOSS) deployment is increasing in colleges, we’re getting more questions about different licensing scenarios. Thankfully, Emma, who’s Microsoft’s ladylicensing, has posted an excellent guide to help you look at evaluating when to buy MOSS for Internet Sites or CALs. There are two separate but linked postings and I’d recommend them to everyone planning their MOSS deployment:
MOSS FIS or MOSS CALs for External Users - What is the CAL Break even point?
MOSS - Microsoft Office SharePoint Server - Common Licensing Scenarios