A BIG thank you to everyone who had a look for me, it is called "A Scholar!" I cannot find it in any UK online shops and although I can see a picture of it on a US website it is out of stock. Actually I need the image fairly quickly so buying from the US would be a bit of a problem anyway. I so wish that I had bought it when I saw it last year. What a shame. I do really like the cow one, thank you for your suggestions, however, I do not want my cousin to think that I am calling her a cow!!
UPDATE 16/02/08: I have found out that the stamp has been discontinued so I doubt that I will now bw able to find it anywhere. A very kind lady is going to have a look when she travels to New York for it for me so fingers crossed. Thank you for all the suggestions including finding a card on eBay with it on. A good friend of mine kindly asked the person who made it if I could buy a couple of the images from her but it wasn't her stamp to do them which is a shame. Never mind, I have learnt from my lesson. When I see something I want ... buy it before it sells out!! ;0) I think I have found another idea using a Sizzix person die.