Hello,
Yes, the DLL Can be used to create a printer driver. We in fact use code from the DLL for our FaxMan printer drivers and our ImageIt product which are printer drivers.
Basically you'll need to create a Unidriver hook DLL that captures the printed bitmap and writes it using FaxMan. Sorry we dont have any sample at this time but if you install the Windows DDK there is a bitmap sample that has all the plumbing to create the bitmap.