welcome to the forum
Just download it, unzip and use the bin/.....bat scripts (run or standalone depend on the version) to start.
Depend on the version you might have a look into the docs AS7 can be found here
Do edit it a bit according to https://community.jboss.org/wiki/RunningJBossAS7AsAWindowsService , otherwise you might end up calling shutdown.exe and it shuts down the entire server. Been there, done that, server on other end of country ;-)
If you search in youtube you will find of the video demo installation.
You have need of Jdk 1.6/1.7 for to use Jboss As /7.X
After installation you have to decide if you want to use
Oh thanks a lot people! Did the installation successfully now i need to set up a Cluster for the 3independent servers (Windows Server 2008). Any help?
You have two ways
a) You can use mode standalone
b) You can use mode domain
You have install Jboss mode standalone on all Server
You install an Domain Controller on one Server and other server configure only mode domain :
you have to make ServerGroup and your server
You can see this url
In addition, the given link is about http clustering.
Important for clustering is to use the a *ha* profile to replicate state or having failover for EJB's.