Well in the brilliant and amazing latest upgrade of vBulletin Software to 4.x and tricky on how to make your Forum Home as the default Home page, the 2 ways are:

Option 1:

1. Find index.php in the installation folder. Open the index.php file in a text editor.
2. At the bottom find this line
   require(‘content.php’);
   Comment out this line as with two forward slashes
   //require(‘content.php’);
3. Find this line
   //require(‘forum.php’);
   By default its commented. Take off the two forward slashes to uncomment it as
   require(‘forum.php’);

Option 2:

• Find index.php in the installation folder. Rename index.php to something else e.g. index_discarded.php
• Find forum.php in the installation folder. Rename it to index.php
• Login to admin cp
• Expand settings
• Click on options
• Click on Forums Home Page Options from the menu and then click on Edit Settings button
• Find the section “Script Name for Forum Home Page”. By default forum is the value in the textbox there.
• Change the textbox value to index
• Click on the Save button

Cheers! And you’re done.
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