installing an old version of tomcat on ubuntu 10.04

[Tapas Mishra]

As per doc given here
http://confluence.sakaiproject.org/d...tall+%282.7%29
for an LMS that is sakai I need an old version of Tomcat.
http://archive.apache.org/dist/tomcat/tomcat-5/v5.5.30/
I checked this page
https://help.ubuntu.com/community/ApacheTomcat5
but when I tried installing

aptitude install tomcat5

Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
Couldn't find any package whose name or description matched "tomcat5"
Couldn't find any package whose name or description matched "tomcat5"
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 52 not upgraded.
Need to get 0B of archives. After unpacking 0B will be used.
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done

What should I do to install the old version of Tomcat on said server for Sakai?