Hi Naurin,
It kinda depends on the type of MAC you have and the type of TV you have. If you have a flat screen TV it should have a HDMI socket.
It will be on the back panel, with all the other connectors. It looks like a thin slot about 1.5cm wide - see the pic below
http://clear-cloud.com/sitebuildercontent/sitebuilderpictures/hdmi-port22222.jpg
If you DONT See one of these, then it may also have whats known as a VGA slot. This looks like a BLUE tapered computer port. - see the pic below
http://www.tvone.com/images/1t-vga-cattx-rear.jpg
If you have a newer MAC laptop you'll need a lead (you can get it from the Apple Store in Geneva) - http://store.apple.com/us/product/M9267G/A
Thats the one I think. Take your laptop with you and tell them what connector your TV has. I would suggest talking a picture (on your phone) of the connectors on the back of your TV and show it to them in the Apple Store.
Hope that helps a bit....