Looks like you haven't built and/or included libboost_date_time in your project settings. One problem with the 1.29 release is that the date_time build didn't get into the overall Jamfile so you need to go into the boost/libs/date_time/build library and run bjam to build the library if you haven't already. Once you have the library you will need to also include this in your project settings. And, BTW, the methods are defined in boost/libs/date_time/src/gregorian
We're in business now Jeff! :) It would definitely be a good thing to have this library included in the boost jam file. Also maybe a bit of mention in the documentation about this library inlcusion would be good too. During my build of the date_time library, I got 3 of the test failing due to a INTERNAL COMPILER ERROR reported by VC. I'll attempt to build again to give you an exact occurence.