I don't know what I would do to write the config file for a vBulletin please help where would I write it at!
Config file for what? For the install of VB?? What are you trying to do? I have been running a VB forum for a year and a half, and I have never had to write a config file from scratch.
You have to rename the file "config.php.new" to "config.php" in the includes folder and run the install script.