I don't know how familiar you are with the coding but if you look for sub sForumNavigation() towards the end of inc_header.asp, that is the section you would have to modify to remove it. The code for that block of links runs from there to end sub.
It's right around this code...
" <a href=""members.asp""" & dWStatus("Current members of these forums...") & " tabindex=""-1""><acronym title=""Current members of these forums..."">Members</acronym></a>" & vbNewline & _
" |" & vbNewline & _
that you would have to modify. In fact, the more I look at it, commenting out those 2 lines may do it. Make a backup first!