Some weeks ago I purchased a MacBook Pro. I am really satisfied but as I`ve written before, there are just some keys which I really miss on my keyboard. BUT... Today was a really good day! I found out the keys!!!

So... for everybody who is looking and still cannot find here comes the
solution:

home AND insert --- fn + back arrow
end --- fn + forward arrow

Very simple and I was so glad because I really need the insert function
for Maya. This key is sometimes a little annoying when you use it in
text editor programs like word or writer. But in Maya it is a very
functional key and I was so so so happy to find this out! Very good day! :)