Reality Factory

3 Things:

1-I dont know how to link a trigger and a message
2-I dont know how to create a message
3-I dont know how to import the message


Basically, I dont know anything.

Can anyone help me out?

Both the documentation that comes with Reality Factory and the "Making 3D Games with Reality Factory" e-book describe how to create triggers and messages. Please come back after you have read them and have more specific questions.