integration-regression

experts:-1.integration testing and regression testing both are the same or not/if different where we do this one means devlopment server and Q&A,

2. who is the power users, means where this people involved,(what is the difference between power users, and general users).

3. who will do the user aceptance test( this is done by the fi consultant) or any one.

plz...... clarrify this.