MSN Webcam help

hi um..im having problems with my Acer Aspire 5740G built-in Webcam.
I want to do a video call but it doesn't work.
I have the newest MSN Messenger with Live plus. (v.9.0)
I can only use my webcam when i click on my friends webcam and say that i want to see it. Then i click on my own and it works.
The options and stuff on MSN says that my webcam is working perfectly. How can i solve it? Thanks in advance.

is there no webcam icon next to your display picture before you press the one next to your friend's display picture?

there is a webcam picture next to my dp. but the "show my webcam" is grey, like i can't click it.