Jtemplate is the first step towards Joodr,It aims at allowing usage of vast number of premium joomla templates with drupal with minimal effort. It is basically a set of Drupal Module and a templating Engine based on phptemplate. The idea is to allow the use of Joomla templates on Drupal as good templates for drupal are missing, drupal templating is expensive and few premium template providers who are there charge really high.Currently you just need to upload the template to the themes directory and just create a dummy template_name.infofile in the directory and the rest everything is taken care by Jtemplate.
Currently a lot of work is still remaining but here are a few features -
- Drupal 6 supported
- Joomla 1.5 templates compatible
- Little to no changes required to Joomla templates
- Support for Template params and Template styes from admin
- Effects and Suckerfish menus supported
- Tested with premium templates from some providers.
Anyhow will be releasing the download soon , am looking for people to help me improve it for now.As everything does not work 
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You can check a demo here – http://joodr.org/demo/ . The demo is running plain Drupal 6.5 with Jtemplate installed. The template is from rocketheme , with no changes or editing done .
Here is an alpha release as im not getting time to work on it , this is meant for people comfortable with drupal and know what they are doing.
Upload the site structure in the zip file and enable jtemplate module in the admin. To create menus use joomla like names mainmenu,footer,usermenu etc for drupal menu name. Also make the default drupal theme as admin theme from settings.