If you need a pattern, you might look at some tunic patterns. They are often very similar and pretty easy to modify. Simplicity and McCalls have some pretty easy patterns. (Folkwear has some really neat patterns for kurtas and other ethnic clothes, but they are kind of pricey) Once you make one with a pattern, you'll be able to make more without a pattern.
I know that it was already mentioned that Folkwear had a pattern for a Kurta... but here is the link... http://www.folkwear.com/135.html
