When PDFCreator is installed on a Win7 machine, it will install to the Program Files (x86) folder. If your coding in VB and use the CreateObject late binding process, it will fail with an error message that the object could not be found. The work around is to locate the file in Program File (x86), and use the right click popup on the PDFCreator and open Properties. You will need to uncheck the Win XP compatibility check box. This will tell windows that the progam will run on Win7 64 bit machines.