Shoutbox

I just don't understand how I put that in my settings for it to check it or w/e.  it has 2 spaces.  both i have no idea on.  one i think is a port (last one).  i just want it to check it in my mozilla firefox browser to gmail.  if i can do that.  i dont like using clients on my computer like outlook express, etc.  what do i put in for it to check it in mozilla firefox on gmail? =/