>I've used the developer license for the Amyuni driver and I can tell you that's a good product. It is easy to use but I remember that it had a problem under Win2000 if the user didn't have right for managing printer (principally add printer).
>
>Maybe it's ok today...

Any PDF product that installs a printer driver programatically on demand (as opposed to installing a permanent driver manually) is going to require that the logged on user who is running your application have rights to add a printer under NT/2000/XP. This is not a problem with the product, just a requirement of the OS.

I echo your first comment, that Amyuni is a good product.