OK, I got, compiled and installed PyLapack.tar.gz. It looks quite complete, for LAPACK 1 or 2, but, of course those routines I need are new in LAPACK 3 :-(. It seemes, Doug Heisterkamp used some kind of a script or program to generate the wrapper. Is there anyone who knows, whether this program is avaible anywhere, so it could be extended for LAPACK 3 and Win? Thanks Berthold -- email: hoel@GermanLloyd.org ) tel. : +49 (40) 3 61 49 - 73 74 ( C[_] These opinions might be mine, but never those of my employer.