Verizon My Button SMS Messaging

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I have a Verizon Touch Pro and I do not like the fact that there is not an easy way to move from conversation to conversation in txt messaging.

For example
1. you are having a convo with friend 1 and then friend 2 txts you
2. the only way I know how to move to that other conversation is to use
a. the ok button on the touch screen or
b. the back button on the front hardware buttons.
c. hit the messaging button and then select sms messages

I was thinking that if the "my button" could be mapped to sms messages and it would relieve this issue as it would be a single click back to all the sms conversations, but that does not seem to be the case as the closes i can map it too is the mail setting which goes to the same place as (c) above.

Any help on this will be very much appreciated