Hi: I'm trying to build boost with both the bzip2 and zlib io filters. I've tried the following command line with no success: Bjam -toolset=msvc -stage -sbzip_source="c:\program files\bzip2" -szlib_source="c:\program files\zlib" I get the error: Error c1083: cannot open file zlib.h This is in the c:\program files\zlib directory. Anyone know what I'm doing wrong? Cheers Sean.