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Unfortunately, bjam is somewhat limited by the underlying shell used to actually run the build commands. We've had a hard time getting it to cooperate with Win9x for that reason. John Maddock has had some success by building and running bjam under Cygwin, which has no command-line length limitation. I'm not sure whether it can be made to run the Borland toolset that way or not, but I know that John targets Borland so it's a good bet.
At one stage that did work, but not any more, the cygwin build will only build cygwin apps (it's a problem with the way in which cygwin passes absolute paths to the programs it spawns). You can probably build all you want from the IDE pretty easily - many people do that all the time. John Maddock http://ourworld.compuserve.com/homepages/john_maddock/index.htm