When I re-installed FS2004 on Windows 7 I discovered the kneeboard wouldn't work. It would pop up but was inoperable.
I went to the Flightsim.com forum to ask for help but after two days none was forthcoming. No amount of searching the forum resulted in a fix.
This morning after a couple hours on the internet I found an old 2007 FS.com forum thread on the problem by David 'OPA' Marshall. This was in response to a person who experienced flightsim crashes when he used the kneeboard. Obviously not for Windows 7 because that was two years before Windows 7 came out.
But I tried it anyway and it worked. i now have a functioning kneeboard on FS2004 in Windows 7.
Here's the solution:
Browse to the Flight Simulator 2004 Root folder (Default c:\Program Files\Microsoft Games\Flight Simulator 9\)
Find and delete or rename the file OLEACC.DLL
Restart Flight Simulator
I use the kneeboard for the Rana moving map display of sectionals, terminal area charts, and airport diagrams.
Hope this mght help someone out here. Or maybe you alredy know it.