Hey mathan, for calibration, it's best to use the suggested setting that sandesh1978 posted and then tweak around a little bit to achieve the best possible picture quality as it depends a lot on your home ambiance (the lighting, the number of windows, etc.) as well as your viewing habit and taste. So I'm glad that the new setting is working for you. As for the WiFi Dongle, the AN-WF100 model is required for wireless access and will need to be purchased separately. It looks like this:
LG AN-WF100 TV Accessories - Wi-Fi Dongle - LG Electronics Australia You can easily buy it from our LG authorized shops as well as on all the major online retailer sites.
LG WRman Sherlock out!