I would like to change text message ring tone but can only find how to change ringtone and not for text messages
I found the answer!! Go to Menu>Settings>Profiles, then go to Options>Edit. Push the right side of the square (that you use to navigate the menus) so that you're working with New Messages, not Incoming Call. Go down to Message Alert Tone, then go to Options>Change>Use Effect Tone. If you were trying to use an .mmf that you downloaded, or any of the preloaded ones that can be used as incoming call ringtones, you'd go to Use My Alert Tone here. There are 4 tones under Use Effect Tone, and you can play them and choose one, just like you do to play and choose your ringtone.