Try wiiflow from here: WiiFlow USB Loader - Downloads
Download the full version it has great themes.
Once downloaded ubrar if needed and do following things.
Open up WAD folder and put WAD called WiiFlow Carbonik Channel Forwarder-WFBJ.wad in your WAD folder on your sd card.
Open up apps folder and one called wiiflow249 rename it wiiflow and put it in apps folder on your sd card.
Put sd card in wii and go to hbc and load WAD manager (if you dont have it google it), when WAD manager is loaded keep hitting A until you get to install screen and install WiiFlow Carbonik Channel Forwarder-WFBJ.wad.
Once installed hit home button and go back to wiimenu and you will have a new channel.
Plug hard drive in bottom usb port and launch new wiiflow channel.