New ignition and key

I just put in a new ignition system in the van because the old one kept turning the van off and on while driving and had a locksmith out after it would not turn at all and he got it working but said I need a whole new ignition so I was wondering about programming it or is it a dealer only,I know someone who works for toyota out of state and sent me the new ignition system with the new key at about half the price from the dealer here