Someone to help me????

it's hard to give advice when you've not provided any information regarding what type of internship you're looking for. Keep in mind also that Iceland is still going through a bit of a recession so unemployment in some sectors is quite high.

I am a student in Foreign Languages applied to Trade and Communication, I would like to find an internship in any company having relations with other foreign country. I am in my first year of Technical communication Master there in France and I have to do an 4 months'internship. I just want an internship with commercial, marketing or communications (IT) aspects. Can you bring me some help please : )

have you tried contacting your embassy here? They seem like an obvious starting point if you're intrerested in foreign relations

http://www.ambafrance-is.org/