Parental Monitoring Programs

Ok.. I'm looking for a free monitoring program for a customer at work. She'd prefer it take screen shots after a certain time, or even after key words.

I do have a few programs, like keyprowler and Ardamax that are freaking awesome key loggers, but they cost around the 50$ mark, which isn't what she's asking price wise.

I realize its next to impossible to get a good one for free, but a half decent one would be nice.

What about K9? It is pretty popular.

How about a Remote Administration Tool? Although commonly classified as a virus by many AntiViruses, I know of a ton of them. They just can't take random screenshots after keywords and such.

Nah that wouldn't work... But K9 doesn't most of the things she wants. Thanks