I saw a site that said you should set it to the latest device you tested your program with. The reason being is in newer versions, some features like the menu button might not be present, and if your app needs the menu button to exit and there is none on the device, but you set the target version to the version you tested it on, it will put up a menu button on the screen... With that being said, how can I tell for sure what version my operating system is?
Settings, About Phone, I have:
Firmware Version 2.3.6
Kernel Version 2.6.35.7