[ubuntu] How can I safely install over 1000 packages including solving dependencies & Updates?

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http://ubuntuforums.org – Okay, I will be reinstalling ubuntu from ubuntu 11.04. I have a backup of every package I've ever installed, 1472 in total. I wish to reinstall all of these. Some are updates to other packages. Its very confusing trying to install them via symnaptic. It always gives me broken package errors. If I reinstall ubuntu completely, I will have a fresh chance. So please help me :) Thank you!! (Hardware)