Hi Gary. Unfortunately you cant. The vehicle originally had three keys. One master, coloured red and two slaves coloured black. If you have no keys at all you will have to revert to three keys again to get things going. It would have to be programmed in the " all keys lost" mode. I would guess also you do not know the key number, so you will have to start there.
I believe there is a mobile service that will come to you and retrieve the number by whats called a Key Barrel Reader, that will at least get you to be able to operate the locks. You may also find the same service may be able to supply and cut the keys you need. there is also a chance they may be able to programme them for you too. If they cannot you will have to get the vehicle to a main dealer to sort out the programming. Have a search on-line for a company called "The Key Doctor" In the South East I believe there are several franchises and probably more around the country. Good Luck.
Paul, February 2008