You need to learn how to rig a model in Poser and turn it from a prop into a Figure (like your character is a figure).  This is done by adding bones in the Setup Room.  You should try to watch these videos on how to do this, even though they are in English, the whole process is demonstrated on screen.

http://www.youtube.com/watch?v=q8jxSOL_MAM&feature=related 1 of 3
http://www.youtube.com/watch?v=t6f6MXtKlbU&feature=related 2 of 3
http://www.youtube.com/watch?v=Nggl2JSLLtc&feature=related 3 of 3

You are also starting with a fairly advanced project.  You should probably try to start with something simpler, like just a cable.  Once you understand how to rig an easy project, like a simple cable, you can build on that and try to do something harder, like if the cable is connected to another object like your sword.  The last step would be to add Inverse Kinematics - for a straight cable, like what you have, that is not very hard, but the model has to be rigged first.

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