I still can't find the dlls that work for perl or python. The Cygwin perl 5.8 dll, cygperl5_88.dll, if renamed to perl588.dll causes gvim to crash (big surprise..).
I next tried Python, since I have both the Cygwin python, and the Win32 download direct from the python site. Neither have a .ddl that matches the gvim compile option, though the python version is correct. So, it becomes a general question. Where are the various .dll's for Win32 Vim external interpreters? Heck, even Google returns nothing for perl588.dll. :helpgrep \.dll doesn't talk about what/where they are either. Maybe I'm missing some basic understanding of Vim's dynamic linking system?
