Hi, IMO the most important thing is not annoying your users with to heavy licensing ;) Probably for a game your users are just expecting a serial number. You need to pick where to store it, in your app settings, or the registry. Then you need some code to generate numbers, and some code to check if a serial number is valid. http://www.codeproject.com/install/LicenseKeyGeneration.asp[^] - seems useful for that.
Mark Churchill Director Dunn & Churchill