[boost] [program_options] vc6 and vc7: explicit function template arguments

Hello, it appears that both vc6 and vc7 don't understand explicit function template arguments, like this: value<string>()->implicit() where 'value' is a function. Anybody can suggest a workaround? One possible approach would be to make 'value' a class which overloaded operator->, but that's a lot of work. TIA, Volodya