Merge pdfs via command line using 1.9.4 version

I have been successfully using version 1.7.3 of PDFCreator for merging
pdfs via Excel-VBA command line function. I have used "MergePDFFiles_2"
method of the "pdfforge.pdf.pdf" object.

But now I have upgraded to the version 1.9.4 and cannot reference it in excel vba (Tools->References->MISSING PDFCreator)

So how can I merge pdfs in this new version via command line?

P.S: I'm using Office 2010 and Windows 7