When did you write this utility? Was it all written after hours or on the company dime? You might be interested in checking out the last thread started by tilly.

What kind of recognition are you looking for? Programmers are not usually "Rock Stars"; if the code works you rarely hear a word about it and you might get an extra dime come review time. If there is a problem, whoa boy you'll hear about it.

If you don't want to support it, then make part of your presentation that management needs to find a programmer to support it.

How do you know the other individual didn't see any reward? What was he doing 8 years ago? How much of a promotion is running the companies Network Security from that? Would he have gotten there without it? as soon?

What I am trying to say is that programming utilities is generally thankless, usually the closest you come to a thank you is someone telling you that tool would be useful if it could do X.