[Wine] Youtube problem etc

[ec1955]

HI, I'm new to WINE and Ubuntu!
I am using Ubuntu classic 11?
I've got WINE installed because my webbulider is WINDOWS based.
I also have a problem watching YOU TUBE videos in FULLSCREEN MODE.
It worked fine with Windows - is there something I can do to rectify this?
I do not understand all the components in a system such as what DLL, kernels etc are, so please describe what I can do if you can.
Thanks for your time.
Ernest