I haven't been able to find it either, I think I'm gonna call a BMV around here and ask about it, I'll let you know if I found out anything useful.
Thanks for posting the link, I know this forum has some rules about linking so I didn't post it.
EDIT:
I just called the Columbus BMV (figured they'd know more about it than my local one up here) and asked if there was a specific form to fill out or if I just needed a letter, she said there's a form and then asked if I wanted her to send it to me. So it looks like you need a form from them, I'm not sure if you can pick it up at any BMV, probably could have checked that first, but I can wait for it to get mailed since I don't know how I'm getting it filled out yet, haha.