[Using Sakai] how to install sakai bin in an existing tomcat6

[Tapas Mishra]

I am new to both Tomcat and Sakai.
I have a Ubuntu 10.04 server edtion with no GUI access to it.
I installed tomcat6
apt-get install tomcat6
and then downloaded the binary from here
http://confluence.sakaiproject.org/display/DOC/Sakai+2.7
but where should I keep it for sakai to work.
Also I have some other applications working on port 8080
is it possible to use some port other than 8080,8005 and 8009

what should I read to be able to use Tomcat and Sakai?

-- 
Tapas
http://mightydreams.blogspot.com
http://wiki.xensource.com/xenwiki/Xen_on_4_app_servers