Is there any link where i can download the exe file to install tomcat.
could not find it
what configuration i need to do so that it work with eclispe
http://mirror.candidhosting.com/pub/apache/tomcat/tomcat-7/v7.0.8/bin/apache-tomcat-7.0.8.exe
Just set up a new server in Eclipse preferences and point it to your Tomcat install directory (by default it's C:\Program Files\Apache Software Foundation\Tomcat 7.0 or something similar).
You dont need to run an install for tomcat, it is pure java. Here are the basic steps:
Check out this link: Tomcat Introduction