What I need to do:(Psuedo Code)

IF NOT URL(www.ghmcc.co.uk/forum)
  GOTO www.ghmcc.co.uk:8000
END


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Current vhosts.conf file:

ProxyRequests Off
RewriteEngine On
RewriteRule ^/(.*) http://ghmcc.co.uk:8000/$1 [P,L]
ProxyPass / http://www.ghmcc.co.uk:8000/
ProxyPassReverse / http://www.ghmcc.co.uk:8000/