Thanks Lynne!
Much obliged!

:up:
One more Q then?
If I have created a custom user field in Admin CP, called it "Real Name", varname is $vbphrase[field8_title] and text is Real Name, then to change a post to show a user's real name instead of where it shows the user's login id (in blue, bold and underlined), what do I have to do -
Change all $post[username] to $post[field8_title]?
Will this be enough to do the job - atleast in the user posts?