[SM-USERS] Squirrellmail/Webmail Page

Folks -- The first time I asked this question I got shout at, probably cursed at and may be kicked into recycle bin. I am sure the question is very basic to most of you gurus, but I am a newbie and I am doing the best I can to become a guru as well. My question is, I am searching for documentation(

[SM-USERS] Cutomize Webmail Welcome Page

I would like to modify the welcome page of my Webmail with my company logo as well as the background. I am sure where to begin. I definitely need a help. Can somebody please show me the way.   Thanks