Regarding Question 1, you can use a custom menu widget.
Create a new menu, add your menu items. Deploy a custom menu widget to your footer widget area and select your menu.
If you want to put links in the footer, but not the footer widget area.
Go to Theme Options -> Footer -> Custom Footer and use the default copyright links as example.
<p id="copyright"><span class="credits"><a href="http://theme4press.com/evolve-multipurpose-wordpress-theme/">evolve</a> theme by Theme4Press&nbsp;&nbsp;&bull;&nbsp;&nbsp;Powered by <a href="http://wordpress.org">WordPress</a></span></p>
Regarding Question 2.
Please provide URL to your dialog. I need to see it in order to provide a possible solution.