Editing Movie tags in iTunes

So I’ve gotten my AppleTV all set up and am ripping all of my movies and using Handbrake to encode them for the AppleTV. However I’ve discovered that I can’t edit all the information about the movie once I have it loaded into iTunes. I can’t put any text into the “Description” field, or put in the MPAA Rating for the movie. Since the AppleTV has a parental feature to require a password for a certain level of ratings, it would be nice to be able to actually put the rating in the meta information somehow.

A short Google search turned up Lostify which appears to be for Mac only, iPodTVShow and Tagger, none of which I can get to work.

So does anyone have any other suggestions for other software that will let you edit all of the meta-tags for movies that iTunes supports? Or any tips or tricks in using Tagger or iPodTVShow?
Thanks

This won’t help you, as it sounds like you’re on Windows, but if any Mac people come in looking for a solution, I’ve used a program called MetaX with great success.

Thanks TheFifthYear, I’ve seen that one talked about in a few places. I think I’m just going to be out of luck. It’s not really a problem yet for my kids…3 years is a bit young to figure out all the intricacies of how the AppleTV works. I guess I’ll just wait a bit and eventually someone will come out with something.