I´m now again online at my skype on PC :D
the problem was, I installed that "DVD Videosoft Free Studio" converter thingies :3

I found in a forum that that might happen when you install it that skype can´t send messeges anymore... weird thing :O
but right after I uninstalled the converter I tryed it out and PENG I can send messeges again ^^

I´m now so much releaved, I was worrying so much... that my project could end even before it starts... ^^;

thanks anyways for the massive amont of people (1 guy) who lend me a hand in that dark days of nothingness ;o;