Thomas,
Everything is in the SVN (and in Boost V1.37, BTW) and the examples should provide a fairly good starting point.
I first tried reading the docs, but karma is not yet covered. So I went to "boost_trunk\libs\spirit\example\karma" and typed "bjam -- toolset=msvc", in order to play with the examples. bjam complained about line 11 of Jamfile ("exe actions : actions.cpp ;", "actions" seems to collide with a bjam keyword), so I removed this line and tried again. It took a surprising long time, and two files failed to compile (quick_start1.cpp and basic_facilities.cpp). I guess I should have used V1.37 instead of trunk, but I'm too lazy to check this. Instead I attached the error-output (errors.txt), because I guess it is something trivial, for somebody with enough experience :-)
These things are fixed in SVN now. Thanks! Regards Hartmut