Check Below URL :
http://screencastworld.com/2010/03/screencasts/screencast-how-to-install-magento-commerce-1-4-using-the-full-release-bundle
Check Below URL :
http://screencastworld.com/2010/03/screencasts/screencast-how-to-install-magento-commerce-1-4-using-the-full-release-bundle