Microsoft Word Document Process

I need a very simple code to extract content from a Word Document Based on the Style of the text. I have thousends of Word Documents and i need a simple way to extrat the paragraphs with an specifically style. I need to include in an old Visual Basic 6.0 program that only need this feature, so the perfect solution is the code in Vb6, but it can do in another lenguaje, creating an EXE program with command line to generate a simple TXT with the information i need. I am sending a Word Document Sample to see the sytle i need to extract, called "Data" or "Date" or "Fecha". In this case is the first line of the document. I need the source code and the exe program working fine.