The Following Video explain it very well: "Community or Enterprise: Which JBoss is best? " Community or Enterprise: Which JBoss is best? - YouTube
It help is understanding which one to choose and why ?
given that you downloaded 6.1.1 which is only available in customer portal and not on jboss.org,
I would say you *do* have access to customer downloads and as such also native downloads.
for 6.1.1 you can get them under https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?downloadType=distributions&product=appplatform&version=6.1.1
look for "Red Hat JBoss Enterprise Application Platform 6.1.1 Native Components for Windows Server 2008 x86_64"
but you need to be logged in with active subscription to access that.
in any case i would recommend you to use some newer version of EAP 6, current latest being 6.4.0.GA
Thanks Jay and Tomaz for your suggestions.