i use phonegap build, its free for one private app and free for as many public apps as you want right now. All you do is create your account with phonegap then export your game using the export for phonegap feature in C2. After that Zip up your folder then click update code on the phonegap build website and choose the zip. then phonegap will build the apk for you. very very simple, they also build it for webos, simbian, iphone (but you need a store key), and blackberry. i cannot recommend this service any higher because of its ease of use.
After that if you wanna put it on your phone just email it to your gmail account and it will allow you to install from there or run in an emulator.