Hey dennis. Open Messaging, tap the Menu button then tap on Settings. Scroll down until you see Notification Settings. Under that you should see the Select ringtone option.
Is there a secret to setting the ringtones for contacts on my Samsung Galaxy Centura? I go to my contacts, click on one, open the option menu, click set ringtone, pick a ringtone from the menu, click ok, and exit, but when I reopen that contact, the ringtone is back to the default ringtone. Am I missing something?