Hi
For figuring out what my program does on Windows I was looking for an Api Monitor, kinda the Windows counterpart of +relay. So I came across this page. It didn't quite help me but it's maybe useful for others. Just be sure to set a process filter or your computer will stop responding as it's overflowed with messages (as happened with me :)
http://www.rohitab.com/apimonitor/
bye Fabi