Use PDFCreator in VB6

Hello. I need to convert in a single pdf file, a set of files of various nature (doc, jpg, bmp,...) from time to time selected by the user.

After endless research on the internet, I was focused on the use of PDFCrator as free (in fact, my client does not want to spend anything).

I downloaded the executable for the installation, I had a look at the guide and I seem to have realized that I use in my VB project pdfforge.dll referencing.
The problem is that when I try to put the bill through references, I get the message "Can not add a reference to the file specified."

Someone can help me, maybe with some code examples to use PDFCreator using VB6.




No one can help me?