how to get the base path of zend framework project?

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PHP

Zend

Hai,
I am in a situation to use php and zend framework 1.12.9 version. and my UI is a pure html pages which was created separately and so i wanted to integrate it with zend as a phtml files (I am getting the output but the styles used are not coming because it is available in some other location which should be included inside my application).

So my question is how to include the external files such as .css, .js and etc., into my application so that i may get all the resources that I need for my application.

Thanks in Advance!!!