While I do not have an LG Gossip Pro, I have an Android phone and therefore, the settings should look alike.
In my phone, to change the keyboard used, I need to go under Settings - Language & Keyboard settings. There, I can see my other keyboards and put a check mark next to the one I want to use. To use the default one, I have not to put any check marks.
@ Community: Can anyone confirm that it works the same for the Gossip Pro?