Lexmark 2500 scanner vs Word for Windoze

I just got a Lexmark 2500 copier, fax, scanner, printer thingy.

I tried to scan something as a "document", and the thing tried to save it in Word. Problem is, I have not activated my Word (lost the registration code for the 'free 60 day trial'), and I do not know how to change my 'default word processing program'.

Any advice on how to set WordPad or WorksProcessor as my 'default' word processing program so the stupid scanner will save documents to it instead of Word?

I looked and searched and explored and troubleshooted (!) and helped and everything else, but cannot find zippidy doodah about how to change my 'default word processing program'...