Could someone tell me how do I change the default ring tone (LG800G) for someone without a special ring? I know how to attach it to a particular person, but not how to change the one not associated with anyone.

Also, when I set the ring for text messages and for voice mail there a way to separate the ring tone for each item? I put in 2 separate ring tones and it does the same sound for both...the first entered. How do I separate them and make them distinct?