How do I re program the key fob on my 1995 Jaguar xj6?

I've just bought a Jaguar xj6, 1995 and the key fob didnt work, I put a new battery in it and the lights now work but I think it needs re programing as its not llocking or unlocking the doors. Can any one help?|||If the source shows the remote you have, there is a link near the bottom of the page to order programming instructions.