That's bad....Is it too much to assume you cracked it trying to take it apart? I can't believe that just the rain cracked it. I've seen the dislpays get wet inside but dry out after a week or so. That's a bummer. The lcd screens are available but pricey...around $50-$60 I think. Check out promobilitiy.com. I'm pretty sure they have that stuff. You might even check ebay for another 7105t to use for parts if you're sure it's just the display that's bad. It might be time for the Pearl you always wanted (cuz you know you want one!) Good luck with it.

Edit: And I believe the screens are different as the 7105 has the super bright mode for outside and the 7100 does not.