Originally Posted by treybon
I don't use SMS myself, but you might try this.
Once there, change the Number of Previous Items to whatever you feel comfortable with. I think that the max is 50.
I showed a co-worker this just yesterday on her Pearl who was complaining about this very thing and looking for a 3rd party app. She came back later and said that it was exactly what she was looking for.
Keep in mind that only messages that have not been deleted from your Messages will be found in the string of text messages.
Disclaimer: I hope I didn't get your hopes up. I'm not familiar with your specific devices, so the options I outlined above, may not available. I carry the 8703e and it is an option on my unit.
I really just wish a 3rd party would just step up with a option for the bb.