Salvete! I used InfoPath 2010 to create a self-signed certificate (which I can see in Infopath when I go to sign my code). Where is that stored? Even after a refresh, I can't find that certificate in the mmc certificate snap-in.
 Okay, I realize now that I have to "install" the certificate in order to see it in the snap-in. Yet, I still don't know where InfoPath saves the certificates..
I've poked around in Windows, but can't find them anywhere.