outgoing e-mail and PINE

[Bryan D. Brown]

Hey all:

This may seem trivial, but it's going to save me more hassle to just 
set it up if possible.

Is there a way to configure a user using PINE for e-mail to reflect 
his outgoing alias as his outgoing e-mail address?

For example, instead of first@domain.com, it would be sent as 
first.last@domain.com. I know you change the domain in PINE, but 
where would I alter the user name.

You can do this in a plethra of other e-mail clients (Eudora, 
Netscape, etc), but PINE seems to be a bit of a mystery.

So I'm assuming it's not in PINE... would it be in the .bashrc file? 
If so, how do I set that?

Thanks in advance.

Bryan