Services are stopped

I have an Small Business Server 2000. The World Wide Web Publisher, SMTP, Microsoft Exchange Routing Engine and IIS are stopped. I can restart any of them, but when I try to start all of them the others stop. When the WWW Publisher is stopped, I can still get to the internet and all the clients do as well. Nobody is sending or recieving email though. I ran Windows updates, the night before and I think that is what created this problem, however I don't know which ones to remove from the server, they are not dated in add/remove programs (if that is even the problem). Any one else had any problems recenlty like this?

 

If configured properly, your SBS server is configured as a gateway to the Internet, which would still function even if the exchange / web services were stopped. This is a function of the IP stack, and not an application.
Exchange 2000 relies on IIS for its SMTP service as well as www for Outlook Web Access.
What errrors are showing in the system and application event logs for www and exchange?
I'm presuming you are using Exchange as your mail server and not just retrieving POP3 accounts through it.