Rebel XT is the US name, and Kiss is the Japanese.
Why not go for a 400D? They are getting pretty cheap now that the 450D is out. Amazon and others are doing the body and kit lens for £400, and you can get body only for £350. The kit lens isn't brilliant, you can buy mine for £30+PP if you buy body only. With 400D you get 10 megapixels, and self cleaning sensor. Here's pricerunner link. Always get the best you can afford, because if you don't you will end up spending more replacing with better items, especially on lenses.
Compare 400d Digital Cameras Prices - PriceRunner UK