Im trying to link my macbook with the tv using an imac adapter and an hdmi cable but there is no picture. Someone said i need to set my mac to 'share' the screen. Is this the case and how do i do it?
No you do not need to share the screen - this is for something else.
Let's focus on that adapter as this may be your problem.
Not sure which Macbook you have but most likely you will need minidisplay port to HDMI adapter.
Retrieving data ...