what I need is:
1. Same login system in joomla 2.5 (3.0) and vbulletin 4.2.2.
2. After I create joomla artilce, I want same article be automatically created on vbulletin like topic in wanted forum section
3. After some1 comment on same topic on vbulletin, comment will be shown in joomla article also and vice versa