Thank you, and to Andrew and Chris as well for your help. In fact I got the same setup last week (with readline+ctypes) and it worked fine in my computer. The last thing I was trying to do it was to compile the c modules with c++ (the windows version, "visual studio")... I didn't succeed. Good that the test you made was running well.
It's not a problem, all improvements to relax are welcome. As for compiling the C modules, the sconstruct system is the way to go. I don't know if the C++ version of Microsoft Visual Studio will compile C source code. Do you have the free download version "Visual C++ 2005 Express", or some other version? If it does compile C though, the sconstruct system (http://www.scons.org/) is the way relax builds it's modules. According to the SCons website, the system has "[b]uilt-in support for Microsoft Visual Studio .NET and past Visual Studio versions", so by running the command 'scons' in the relax base directory the modules should automatically compile. I'll download the free version of Visual Studio and give it a go - maybe I will be able to provide Windows binaries to download!
Bye,
Edward