Forum Changing the welcomemessage and pagetitle text but can't find where it lives
 

I have used Firefox and Firebug to locate the variables but cannot find the actual file that contains the text string that needs to be replaced. I use the prhase search but it does not lead me to where the actual text string is stored. What file is the "welcomemessage" text and "pagetitle" text stored?
Any help would be greatly appreciated.