hotstart on old website.

Is any possibility to use hotstart on an existing joomla 1.5 website on the old db.

i have a website that i want to change it and want to use the old db because of the articles and all other stuff that i have in the website. but i want to use one of your templates and use it like hotstart whit all the things in the template. or is there any possibility to import all articles from one joomla website to a new joomla website?!

no because database structure is different. But there are components that can help you migrate content, of course you will have to install it as it is then do migration.