Modify script for templating capability

No webdesign needed. Our current script is similar to Digg with the best template around. However, it's not template-based --php or html rather is embedded in the script. The project is to separate the template from the core to make it easier to add new themes in the future. No smartys please, just templating similar to mambo/joomla. Attached what our script is based on. This for you to have a better idea on the task involved and how much to bid. This script is in Spanish without our hacks and custom template. You will be given the English version if selected. Thanks