Cant Configure JBoss As My Local App Server

When setting up JBOSS as a generic appserver in the
Application Servers Dialog, I am unable to find the
jar containing javax.servlet.Servlet. I've tried all
the jars in the jboss installation that look remotely
like they might hold the class in question, but the
dialog still shows:

Warning: Class 'javax.servlet.Servlet' not found in application server

If anyone has managed to set jboss up as the ide's app
server, how did you do it?

I'm running 4.5 on Xp Pro, V2002, SP1

Thanks