How to convert Word 2007 -> PDF from the command line

I am using the command line to convert word docs to pdf using the PDFConversion module. I am able to convert word 2003 documents fine. For Word 2003 I use the function ConvertWordToPDF. I was wondering if anyone knows how to convert word 2007 docs to pdf. I am assuming I just need to change the function ConvertWordToPDF to an updated one for word 2007? I am using the latest version: OpenOfficePortable_3.1.0_English.paf.exe. I tried it out with the new version and it doesn't work. Does anybody have any suggestions?