Changing URL Structure

OK,

I know there are a million posts on changing URL structure, and I’ve looked at many, and can’t seem to solve my problem.

My problem is that I want to change the URL structure of custom post types within my theme (Perfect theme). For example, there originally was a ‘Projects’ custom post type & all posts made to that post type appear as this url http://www.abc.com/projects/PostTitle

I’ve since used that post type to post different information, so I don’t want the ‘projects’ to appear in the URL, eg: http://www.abc.com/PostTitle OR eg. http://www.abc.com/SomethingElse/PostTitle

I’ve tried changing the permalink structure in the wordpress settings, but that does nothing… I think I need to change something within the core code.

Any suggestions would be greatly appreciated!

thnx