Update client

So I’m still working on this game project and I want to build a client that can check for updates from a server and download them for the player. seems straight forward, but i know that its probably some massive headache. Anyone got something to point me in the right direction. Don’t necessarily need anyone to just hand me a piece of code that does it, as I’d rather do it myself. But if anyone has any advice, it would be appreciated. I’d like to keep it in flash and avoid using .NET or c# to do it. Would like the player to be able to login, patch and play the game all without loading any extra client programs.

if this is for AIR then…

http://www.adobe.com/devnet/air/flex/quickstart/articles/update_framework.html

If this for for Flash then surely as long as you update the swf on the server the game will be updated when they load it?

The thing is its a standalone exe. Meaning the data would have to be retrieved somehow.