I don't know if thats covered under the warranty. I'd probably try to, though. On a screen that small, that would be fairly irritating. And for me, once I see a dead pixel, my eyes tend to focus on it all the time!
Just an FYI though, dead pixels occur during the manufacturing process, not during normal usage. Something about the gas used to create the pixels getting trapped or something. I forget exactly, but in any case, you will not get any other dead pixels as time goes on.