This worked once. Then the [yeah, it wasn't backed up] disk drive died. Target system is Win2000, SP5 and MS Visual C++ 6.0, SP5. Downloaded boost-build.win.zip and extracted it to c:\bin\boost-build. Added c:\bin\boost-build to the path. Set environment variables: BOOST_BUILD=c:\bin\boost-build JAM_TOOLSET=VISUALC VISUALC="c:\Program Files\Microsoft Visual Studio\VC98\bin" Checked out from CVS to d:\dev cd'd to d:\dev\boost and executed: %BOOST_BUILD%\jam -sBOOST_ROOT=. -sTOOLS=msvc <result> warning: unknown rule boost-build don't know how to make all ...found 1 target... ...can't find 1 target... </result> I've clearly screwed something up but I can't figure out what. Help would be appreciated. TIA (from the eternal newbie)