You shouldn't need to enable authentication in the driver properties; it should be left off.|
I'm curious as to how you got a driver with pop ups, though.
These need to be customized by an authorized dealer; Ricoh doesn't make the tool available to the public.
Are you using XP, Vista, Windows 7? Are you using 32 or 64 bit? Also, are you using PCL5, PCL6, etc?
Our (useless) service provider is IKON. This will be changing at the end of this year (entirely different topic altogether). When they called into Ricoh to ask how this can be done, they provided the 6500 driver with the pop-up capability. Of course, I've kept a copy of it in case I needed to reinstall it for any reason. However, it's very finicky to get working.
The server that's hosting the printer is Windows 2003 server and it's serving all XP clients.