1. Where could I obtain i586-mswin32 source from?
2. I have a problem noted earlier.

I've buit a very simple extension module with MSVC 6.0 (as well as
Intel C++ Compiler 4.5 also). The dll simply tries to define a global
constant with rb_define_global_constant(const char*,VALUE). But while
this call Ruby interpreter (1.6.2 i586-cygwin32 and precompiled
i586-mswin32 of ActiveRuby) reports a [BUG] Segmentation fault.

Aleksei Guzev