Hi guys, I'm sorry I haven't quite followed the current discussion until I saw a use case that I would like to add to my application. So I started by trying to compile the mighty bimap example and it failed. Are there any problems with the MSVC 7.1 compiler? Or do I need to have the latest CVS head of the needed boost libs? Anyway here is the first the error: error C2661: 'boost::bimap::container_adaptor::sequence_container_adaptor<Base,Iterator,ConstIterator,ReverseIterator,ConstReverseIterator,IteratorToBaseConverter,IteratorFromBaseConverter,ReverseIteratorFromBaseConverter,ValueToBaseConverter,ValueFromBaseConverter,FunctorsFromDerivedClasses>::insert' : no overloaded function takes 1 arguments it happens in the code line: translator.insert( translation("hola" ,"hello" ) ); Christian