Edward Diener wrote:

In the explanation for como-win32 toolset configuration variables, the variable COMO_BACKEND_PATH, which says "Path to backend compiler" has a default value of $(VC7_TOOLS). Running vcvars32.bat for vc7

I believe this is error in documentation. Actual value being used in como-win23-tools.jam is VC7_ROOT . This should have been set by your vcvars32.bat to c:\vsnet\vc7 (given your example directory c:\vsnet ). If you do not have MSVC7 but other version of Visual C++ (like 6.0 or 7.1) you just need to customize two variables : COMO_BACKEND_PATH and COMO_BACKEND . You might also create custom toolset, see como-4_3_3-v17_1-tools.jam for example. Regards B.