For those interested, here's an
article on EUobserver on how the IMF and the ECB may respond to Greece's non-payment of its debt to the IMF. The article, however, seems to be rather soft on what could/would happen, so things may get uglier than is suggested within.
@Jim,
I wish I could be of more help. I've been following the developments in Greece and gobbling up info and news like crazy and even I cannot fully make heads or tails of it all. So goodness knows what the ordinary citizen on the street can make of this latest debacle.