If you are into Mobile Development, this company usually takes in a lot of interns:
http://foo.mobi/
I got an offer for an internship from this company two months ago (but I was not in the country so the position was not vacant anymore, and I also wasn't looking for an internship.):
http://www.rgh.com.lb/
So you could try.
Now the best way to get one, is to go to the Biel job fair, LAU job fair and AUB job fair. They happen around May and companies that need interns or employees usually open kiosks there, so you can go apply and get to meet them (and get a shitload of notepads, mugs, and stress balls).