2005 Altima key programmimng

I have a 2005 Nissan Altima and I have 3 ignition keys. One is a "valet" key that only unlocks the drivers door and starts the car. I want to add a 4th key to be used in the remote start bypass module. I've seen the key on the net for much cheaper than the dealer or a locksmith would charge. But now heres my question. Can I program the key myself or is a special computer required that needs to be plugged up to the car? I know some cars all you have to to is have all working keys and turn the ign off and on so many times with each key. But there are some cars that need to be attached to a computer to program new keys. Is a nissan one that needs to be hooked up to a computer?

special computer, nissan has to program all keys at the same time.Shaughn Murley

Install Manager, Dealer Services

Visions Electronics

Red Deer, Alberta

I checked bypasskit.com already. They have a "pkn2" which is a no key required module, but it doesnt work on 05 Altimas, only up to 04. For the 05 they say I need a key.