How do I change my voicemail greeting on my Samsung M300?

Can anyone tell me how to do this? I just got the phone today, and I can't seem to find out how. I don't have my user guide handy right now.How do I change my voicemail greeting on my Samsung M300?hold down the 1 button until the voicemail gets dialed. follow the instructions detailed. I believe you press 3 for personal greetings for Sprint, but not sure.