No, it's not working. Apparently there is a problem with most if not all of the new phones coming out with Froyo (Android 2.2). They all have the same exact device id. Some apps are written expecting this device id to be unique. ProjectINF uses this id as something like an account id.
I contacted the developers at chickenbrick studios and they told me they are working on some major updates including updates to the account handling.
So basically, ProjectINF is not going to work for you until chickenbrick releases an update or the device id issue is fixed in Froyo and we get a new firmware update.