Hi Fhorvath,
You need Oracle BI Publisher Desktop (formerly called XML Publisher desktop).
BI Publisher provides client side tools to aid in the building and testing of layout templates. This consists of a plugin to MS Word for the building of RTF templates and the Template Viewer, this helps you to test and debug all BI Publisher template types. The client side tools can be downloaded from the edelivery web site or via metalink.
You may visit the following pages to get more info:
http://www.oracle.com/technology/products/xml-publisher/xmlpclient.html
Also checkout the attached pdf document.
Cheers!
Shanmuga