MSDE in Production environment

I have a burning, question, sorry if this has been asked already.

How does the licencing for MSDE work, do you need to "OWN" a valid MS SQL Server licence to use MSDE in production enviroment.

I have a legally purchased copy of Office 2000, which includes MSDE installer. If I want to install this on my webserver for example and run a forum off it (this one for example), the forum will be on the WWW. Will I need a seperate licence for MSDE ?

Please helpAll you will ever need to know is here:

http://www.microsoft.com/sql/msde/howtobuy/msdeuse.asp