Yup I'm aware of it, and I'd love to use it. The only problem is that it's highly linux/unix specific as far as I can tell. Even the graphics libraries it uses only runs on 'nix right now. I just tried to load graphics.hgl and hello world program crashed GHCi and doesn't compile under the regular ghc due to some missing object files. I'm running windows xp 64, though most of the software I use runs under the 32 bit emulation mode. I'd consider linux, but I don't have linux licenses for Matlab or Maple and I have to interface to the corporate MS world. Thus my 'solution' will be to make a very light weight matrix class that only pulls in a few BLAS and Lapack routines coupled with a few file based routines with gnuplot as the output, or perhaps pathon _ gnuplot as the output. With any luck I'll be able to open source that, if it does anybody any good. After that I need to automate document creation from the output of math simulations. I'll use Latex as the engine for that. It's something I've done before to great effect. -- View this message in context: http://www.nabble.com/Troubles-with-FFI-t1611744.html#a4401359 Sent from the Haskell - Haskell-Cafe forum at Nabble.com.