If this is something you are only going to need to do once, have you considered downloading a demo version of Crystal? There's a 30-day trial version available here: http://www.developers.net/businessobjectsshowcase/view/3154
Of course, if you need to edit these files after the 30 day period is over, you would be better off buying Crystal.
Alternatively, if all you need to do is replace a few static literal words, have you tried doing a search and replace in a text editor? (Don't forget to save the original files somewhere safe first!)