If the manual has not appeared in a separate browser window, use this link to view it... BAC 1-11 Manual

This documentation is contained in the BAC 1-11 Panel download and after install it can be found in the folder :-
'Flight Simulator 9\Aircraft\DMFS Shared Files\BAC 1-11 Documentation'
The FS2004 models are set up to use the documentation through the FS2004 kneeboard.  This allows you to view the contents from within the cockpit in FS.