Actually support for vista is only possible with versions 2.50g-4 and higher of the PDF Converter.
Versions 2.1, 2.0 and 1.5 do not support Vista or 64-bits OS.
The inf file available in the link installs a PDF Printer called "Quicken PDF Printer" version 2.51 on Windows XP and Vista 32-bits. However for the inf to install version 2.51 you need to make sure that the dlls of version 2.51 are in the same folder of the inf, if older dlls are there than older version will be installed.
There are different ways to install the printer driver, one of them is through the Add Printer wizard using an inf file, another way is to use our Install.exe or setup.exe that you receive with the product.
This inf file will not install the driver on 64-bits, to install the driver on 64-bits you need the 64-bits dlls, a 64-bits license and an inf for 64-bits installation (if you want to install using the inf file).
The files you mentioned below are not distributed with the driver, you can download them from: www.amyuni.com/downloads/legacy_drivers.zip
Hope this helps.