You'll need to go into the code for this one:
Open inc_functions.asp
Look for the sub doLoginForm() (line 1676)
There you'll find both the text: <p align=center><font face="<% =strDefaultFontFace %>" size="<% =strHeaderFontSize %>">
You do not have access to this forum.
</font></p>
and:<p align=center><font face="<% =strDefaultFontFace %>" size=<% =strDefaultFontSize %>><a href="default.asp">Return to the forum</a></font></p>
Pierre