problems with SFML

[gelatine]

hello i have just started learning to work with the SFML library
but it doesn't work yet. i was following this tutorial: http://sfml-dev.org/tutorials/1.6/start-vc.php
and this is my code:

#include <SFML/System.hpp>
#include <iostream>

int main()
{
    sf::Clock Clock;
    while (Clock.GetElapsedTime() < 5.f)
    {
        std::cout << Clock.GetElapsedTime() << std::endl;
        sf::Sleep(0.5f);
    }

    return 0;
}

and these are my errors:

sfml.obj : error LNK2019: unresolved external symbol "void __cdecl sf::Sleep(float)" (?Sleep@sf@@YAXM@Z) referenced in function _main
1>sfml.obj : error LNK2019: unresolved external symbol "public: float __thiscall sf::Clock::GetElapsedTime(void)const " (?GetElapsedTime@Clock@sf@@QBEMXZ) referenced in function _main
1>sfml.obj : error LNK2019: unresolved external symbol "public: __thiscall sf::Clock::Clock(void)" (??0Clock@sf@@QAE@XZ) referenced in function _main
1>c:\users\jannes\documents\visual studio 2010\Projects\sfml\Debug\sfml.exe : fatal error LNK1120: 3 unresolved externals

can someone please tell me what i'm doing wrong or why he gives me those errors?

[Zhuge]

Are you linking the SFML libraries? It seems the linker isn't finding them.

[gelatine]

found the problem. downloaded some wrong version of SFML...