There is no special API for Visual Basic, but automatic faxing from Visual Basic would work when you add data fields to your document and print the document to the ActiveFax printer. There is no example for VB, but if you have a look at the sample Word document at Program Files\ActiveFax\Server\Sample.doc, you can see how data fields can be used to send fully automated faxes. It works the same way when printing a document from VB. More information about data fields is also available in the online help of the fax server.
Cornelia Wegmueller, ACTIVEFAX Customer Support
INTERTRADE ENTERPRISES LTD :: Blegistr.25 :: CH-6340 Baar/Switzerland
Phone: +41 44 5866974
Fax: +41 44 2742350