+ftp://ftp.ihg.uni-duisburg.de/FlightGear/Win32/MSVC/fgfs-x64-VS90-3rdParty+OSG-20110801.zip
+
+These two archives only contain 'release' versions of librairies and executables. In addition,
+the archives below contain 'debug' version of libraries and should be dezipped over the previous one.
+ftp://ftp.ihg.uni-duisburg.de/FlightGear/Win32/MSVC/fgfs-win32-VS90-3rdParty+OSG-20110801-debug.zip
+ftp://ftp.ihg.uni-duisburg.de/FlightGear/Win32/MSVC/fgfs-x64-VS90-3rdParty+OSG-20110801-debug.zip