Heeelp!please!

dear milanisti
i live in Athens, Greece and i ve booked hotel room and air tickets for the milan-inter derby, but i couldnt find tickets for the match anywhere.
i land in Malpensa on Wednesday 12th April with a friend and we need 2 tickets for the match.

can somebody please give me any directions on where to find tickets while in Milano?
i tried to get them via the official site but it says that they ve been sold out.
is there any other way to buy them on-line?
or do i have to search for tickets while i am in Milano?

I just cant imagine what i am going to do, if saturday night comes and i ll be wandering around Milano wothout tickets.
Maybe i ll go crazy or whatever...

thanks in advance

Ma Milano Siamo Noi