Hi, I have finished a second alpha of the BLAS/LAPACK superpack for windows: http://www.ar.media.kyoto-u.ac.jp/members/david/archives/blas-lapack-superpa... (~ 9 Mb). Changes from first alpha - Both SSE3 and SSE2 are supported. - custom installation possible: you can choose to install .a, .dll, .def and .lib for any target, atlas or netlib. The super pack is an installer which by default install the most optimized blas/lapack possible to compile numpy/scipy with. cheers, David