saving an entire batch of texts

So here's the situation, im presently going through a (insert worst curse word u can think of here) divorce. So right now I have about 300+ texts going back and forth between her. My issue is that I want to delete them because im sick of looking at them but may need these in the future if there's any legal ramifications. How do I save an entire set of texts from a single contact? I presently use Handcent but will do whatever change is necessary to stop having to look at these anymore...thanks

Thanks for the good vibes! Unfortunately I could find no app with that name in market, and the only couple apps I found said it specifically would not work with the Droid X, which of course is what I have. I'm somewhat surprised this isn't a basic feature of any of the text based apps! oh well