adding jQuery noconflict to eliminate plugin problems

The previous designer installed and configured nextgen gallery on the existing site. I purchased and installed a plugin (royalslider) that is conflicting with nextgen because they are running different versions of jQuery. I am very very new to php. I would really appreciate if someone could explain where and how to add noconflict code.

I’d hoped I could add noconflict code to the nextgen gallery plugin so future plugins aren’t also non functional.

Thank you for your help.

I did read a few posts referencing:

<?php wp_enqueue_script(“jquery”); ?>

<?php wp_head(); ?>

Just not sure how to implement this code and if this is the right solution for my issue.