Dell n5110 .. i need driver for the upper keys :)

hello there .. i have a proplem in my dell inspiron n5110 .. there are 3 keys in the right upper side of laptop n5110 .. and when i press on them there is nothing happens .. this is a pic for the keys

http://www.freeimagehosting.net/eukon

i don't know really what is the benefit from these keys but i want them to be work .. waiting for ur solutions .. if anyone can tell me how to switch them .. or if there is a driver for it plz give me .. thxxxxxxxxx

I don't know because I don't have a dell anything. Does it come with a manual?
Start and type in keyboard and see if will tell you in there.