I run the most "Popular OS Downgrade in History" called "XP"

And I run Sony's midi router, which also runs on win2k
http://www.johnrofrano.com/tutorials/virtualmidirouter.htm
It gives me all I need and always seems to work.

Sometimes I use midi-ox with it to split or merge, or ...
http://www.midiox.com/

I forgot why I don't use midi-yoke, I think it caused gigastudio to crash.

I actually take the midi out of BAIB and run it through this midi router and into various samplers (Garritan, Gigastudio) and synths via VSTHost. It allows me to use several different programs at the sametime and switch things around. Works fine with real tracks.

Hope this helps,