How to redirect user to a specific page after they login if they belong to a certain role?

We have certain users in our member list that have a role "vendor" attached to them. All such members are to be redirected to a certain page upon login. How can this be accomplished?

You can define actions and triggers in Drupal:

Action(admin/settings/actions) - Redirect to a specific page

Trigger (admin/build/trigger/user) - After user has logged in

Try this.

EDIT (see comments):

Create a small module to check on a user's login process what role he has and then redirect if neccesary. drupal_goto => redirect-function in drupal

hook_user =>triggers on user operations

And for the user's roles:

GLOBAL $user;
$roles = $user->roles;
$vendor = in_array('vendor', $roles);

$vendor then holds a true/false value will decide to redirect or not.

If you don't know how to do this, just post here and I'll write the module for you. But this would be a good practice for writing future drupa modules for you perhaps. :)