Resolving alfresco to port 80

I need to change the default port of alfresco (http://ip:8080/share) to listen on port 80(http://ip/share)
My alfresco verion is 3.4 community edition
OS is windows 2008 R2

We need to edit two configuration files for listening alfresco from port 8080 to 80.

1. tomcat/shared/classes/alfresco/web-extension/share-config-custom.xml
    Change all ports from 8080 to the desired port
    Save file

2. tomcat/conf/server.xml
    Find the line having ajp
    Change the connector port from 8080 to 80
     Save file

Restart alfresco service.

Try to access http://ip/share
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