Vbulletin: Replace default vbulletin logo in header

Q: i wanted to edited the design of my forum by putting my own design on the top of the forum but i can't find the index.html file to edit. Anyone can help me?

A: there is no "index.html" to edit, all templates and style settings are in the database.

AdminCP > Styles & Templates > Style MAnager > Click on GO >

You should see the header footer and header include templates, along with main width settings and the style var (or image path) settings