I've got a case, where I need to transmit a timestamp across the wire, in a cross-platform manner.  My first choice was boost::ptime, but I cannot seem to find a way to serialize a timestamp in a nice compact manner (i.e.: Two UINT64's, or four, or whatever).  This is actually pretty important, as I need to define the ICD between the sender and recipient.  Am I just overlooking something slick?

I didn't see any news on this since this discussion: http://groups.google.com/group/boost-list/browse_thread/thread/e592c810b020b...