Artisteer Custom Sidebar Generator can create as many sidebars as you need. Specify a sidebar using the new sidebar shortcode.
No. Only themes created with the Artisteer design program v3.1.0.x. Using it with any other themes will cause major galactic destruction.
Once the plugin is active, go to Appearance>Custom Sidebars. Only your generated sidebars will display on this page, your theme's sidebars are still active and working, they just don't show because they are not generated by this plugin.
When you delete a custom sidebar all of the widgets that are present will also be deleted. So make sure you save any special settings in the widgets before deleting the sidebar.
Just include the following code in your theme file where you want the new sidebar to appear.
<?php theme_dynamic_sidebar('sidebar-name'); ?>