Well, the way to do it is to add a new field to the checkout procedure similar to the delivery instruction field.

It is not all that simple.

instructions are on http://www.nick##collie.co.uk/add_te...o_checkout.pdf. Just take the ## out of the url.

These instructions come with no guarantees - they may have typos in them. The principle works and has worked on several sites - but the typos - who knows....