Hi Guys, thanks for your replies, it just wouldn't work, after reading different forums I found that a lot of people had the same problem, but then I found a solution.
It seems that you need to reinstall quicktime 7 again after Tiger, I did it and then it worked again. I didn't disconnect my deck when re-installing, and then I read you have to, maybe that caused the problem?
Thanks again,
Alex Neuman