Progress Capture?

Hi I am having Pdfcreator working excellent with my app via com objects. The procedure is about to combine many, but small files usually pdfs, office docs and images. There is a big delay during the combining of the documents. We don't worry about this because it is obvious with many files, but i would like to notify the user not to cancel my operation. I noticed that there is a percentage status in the window of pdfcreator while combine is taking place. Is there any way to catch this and show it in my app, so the user knows that this is working? May be some other workaround for similar case via com?

Any Ideas??