Printing documents in Spanish

I am part of a team that is evaluating electronic forms software and one of our requirements is that it be able to print documents in Spanish in addition to English.  I assume the Spanish character set is a printer function and switching to it is a Postscript/PCL command.  I assume there is a Spanish character set for monitors that can be accessed somehow (or perhaps need a dedicated Spanish monitor) for creating the Spanish version of the document.

I know that specific knowledge of the software may be necessary for doing the actual printing.  Probably doing something with the Visual Basic scripting that can be used by some software in support of the documents.  Current model high-end work-group printers would be used.  Software being evaluated includes Word, Word Perfect, Jetform's FormFlow, Top Level's Office Forms, and Adobe Acrobat.

Anyone ever do this type of thing?  How about some pointers as to whether this is actually potentially possible and how far off-base are my assumptions.  Anything else would be appreciated.