[CroNiX]

Someone made a plugin that does what Lynne is talking about (and more). Haven't used it, so no comment...but you might check it out.

https://vborg.vbsupport.ru/showthread.php?t=235203

--------------- Added [DATE]1293226751[/DATE] at [TIME]1293226751[/TIME] ---------------

Or if you want to only do what you asked:

Go to Admin CP / Plugins & Products
Add new Plugin

Fill in the following Fields
Product: vBulletin
Hook Location: login_redirect
Title: Login Redirect to homepage (or whatever you want to call it)
Execution Order: 5
Plugin PHP Code:

PHP Code:

$vbulletin->url = 'http://www.yoursite.com/the-url'; 


Plugin is Active? Yes

Obviously just substitute the "http://www.yoursite.com/the-url" with the url you want it to redirect to.

Save it.

It should work now.