link path within custom-dashboard.php

Hi,
thank you for the plugin, it works great for me. 2 Questions!

#1
Is it somehow possible to show it only for a certain user group?

#2
I have quite a hard time, styling it, because of the default link to the wp-admin folder. I have to put everything in there to make it show up on the dashboard, stylesheets, images, whatever. I can not put those files in the plugin folder and link to it. Whatever is using a link within the custom-dashboard page is pointed to the wp-admin folder. I would prefer to store the styling content within the plugin folder. any chance to achieve this?

Thanks for any help on this.

Cheers

http://wordpress.org/extend/plugins/sweet-custom-dashboard/