Setting up Alias in Netscape Mail for Sending

[Leigh]

I need to explain to someone how to set up her alias address to SEND using Netscape's mail.  This is very easy for me to explain on Outlook Express...but even after downloading Netscape myself, I am still at a loss.  (Please forgive me if this is right in front of my face and I am not seeing it!)

Can anyone help on this? (Please!)

Thanks!

Leigh