Download CIOS 222 from here:
http://filetrip.net/f8367-hermes-cIOS-2222...nstaller-4.html
Extract "cios222_rev4_installer" folder to the apps folder on your SD card.
Assuming you have an internet connection, you have all you need. Load up the app, select IOS 249 or a patched 36 when prompted at boot. Then install IOS 38 merged with IOS 37 in either slot 222 or 223, it doesn't matter.
In wiiflow, select the game you'd like to use IOS 222 with and then select the settings icon on the right (mine looks like gears). Go over a page or two and you'll see IOS. Rather than default, change it to either IOS 222 or 223 depending on which you installed earlier.
Good luck dude!