If you have vbadvanced, do a search at
http://www.vbadvanced.com for reviewpost and pick up the mod for reviewpost. I had it installed and working in about 5 minutes.
Most vbulletin sites do require a verification that you actually own a vbulletin license. It's not a premium member thing, and the license can be expired, they just need to know you have one.
Regards,
Matt