Plugin: special recent posts

I would like this plugin to list for me the next most recent posts, aside from the 15 newest posts I always display on my homepage ( http://www.ridgesentinel.com). In other words, if I could use this widget to display, say, the title of posts #16-25 (I.e. with post #1 being the newest), I would be happy.

Is there any way to modify the code to make this plugin do this?

Thanks.