Great solution - but i found a slightly better one.......

I have produced a custom statement in worldpay control panel - which lists all authorised amounts and transaction ID's

I then installed master password module.

I then activated pay by cheque.

I then logged in as each customer - placed the order again (which means the order is in zen and customer gets confirmation) and then deleted the cheque module.

not ideal - but as soon as worldpay updates DNS the problem will be solved.

It seems they cache dns data for 24 hours - shame it wasn't 3 hours!

Right - back to manually checking.

THANKS AGAIN FOR YOUR HELP AND ADVICE.