UPDATE: This plugin is no longer supported. Please use CRM WordPress Leads Plugin.
The screenshot-1.png shows the VtigerCRM settings configuration
The screenshot-2.png shows the VtigerCRM lead fields to be shown in the contact form page or post.
The screenshot-3.png shows the VtigerCRM lead fields to be shown in the widget area.
The screenshot-4.png shows the form which captures the VtigerCRM leads.
The screenshot-5.png shows the form placed in widget area, which captures the VtigerCRM leads.