Your scam is similar to the "free dog" scam that was reported on here a while ago.
http://www.theanswerbank.co.uk/Technology/Inte rnet/Question535729.html
Adverts are placed in the paper for homes for free dogs.
You reply to the advert and they say there is a �50 vets fee, so you pay it.
Then they say the dogs have to be flown to your local airport so the fee is �150 so you pay that.
Then thay say the dog is going to be put down unless you pay an overnight charge of �250 at the airport so you pay that.
Then they say there is another cost for something else.
All of a sudden you realise you have paid out �500 and not seen your dog yet. You start to ask questions and all of a sudden you never hear from them again.
These are called SCAMS, they all tend to follow the same pattern (asking for money for various reasons) and once you start asking questions they disappear.
DONT FALL FOR ANOTHER ONE.