One way I found to do this was to add the following code at the bottom of the UserWelcome.ascx file:

 

        <%if(!CommunityServer.Users.GetUser(false).IsAnonymous){%>
 
     <img src="<%=ResolveUrl("~/CuteSoft_Client/CuteChat/images/icon_invite.gif")%>" align=absmiddle><a href="###" onClick="Chat_OpenMessenger()" >Messenger</a>
  
        <%}%>

 

Anyone have a better way?