Sorry if this is a silly question, but I have no experience with iPods. I'm thinking of buying an 8GB new Nano. However, it is less for any music listening purposes and more as a very small pda - really all I want is a couple of apps: 1) a way to display .txt files, so I can use my laptop to load the Nano with txt files such as lists of items which I can then open and check when out and about and 2) a simple calculator - I don't know if this is possible, since inputting numbers may not be simple. Anyhow, I understand that Apple prolly doesn't have such apps, but are there any 3rd party apps that do that (authorized or not)? TIA!