customizing android plugin for eclipse

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http://stackoverflow.com – I am new to eclipse plugin developement. I want to create my own custom template(different package structure, ui layout etc) for android application project in eclipse. In other words, the option for creating an android project using my template should come up as an option to eclipse. I have downloaded the code for ADT. I want to know if I should go about modifying the adt code or start plugin development from scratch...Please give some pointers how to go about it.. Thanks........ (HowTos)