why build mfcHelloS sample fail!

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Hello.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) protected: class std::map<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,class std::basic_string<char,struct std::char_traits<char>
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Cheers,
Bernard
I open Ice-1.5.1\demo\Ice\MFC\server\mfcHelloS.dsp with vc++6.0 and compile it, vc++6.0 show me 14 errors.
first error is: Hello.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) protected: class std::map<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,class std::basic_string<char,struct std::char_traits<char>
,class std::allocator<char> >,struct std::less<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >,class std::allocator<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > >
const & __thiscall IceProxy::Ice::Object::__defaultContext(void)const " ([email protected]@[email protected]@@IBEABV[email protected][email protected][email protected]@[email protected]@V[email protected]@[email protected]@[email protected]@[email protected][email protected][email protected][email protected]@[email protected]@V?$al
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Cheers,
Michi.
thank you for your help!