I can't imagine how things could turn, a character walking with a boots on his head and a helmet on his feet.
Seriously, even you try its still gonna give either a DC or could not take into an effect. I've tried it in BOF+4 changed its value to 15(which is the ring slot) and when I tried to equip it hoping it could be into the ring slot and it didn't. Patched on some P.servers I guess.
You could use this tutorial though...
Code:
http://www.youtube.com/watch?v=GkMTREk3JDQ&feature=channel_video_title
You can also find some guide here regarding item_desc...hope this helps.