What would I have to do to include a Javascript slider for featured work in SilverStripe? I have already looked through the forums and have found nothing. Sorry to ask such a question, I've just all ready tried a lot of things.

I have done this with the jQuery Slider without much trouble.

Read the docs here: http://docs.jquery.com/UI/Slider

Drop this in your controller/form/whatever:

Requirements::css(THIRDPARTY_DIR.'/jquery/themes/default/ui.all.css');
Requirements::javascript(THIRDPARTY_DIR . '/jquery/jquery-packed.js');
Requirements::javascript(THIRDPARTY_DIR . '/jquery/ui/ui.core.js');
Requirements::javascript(THIRDPARTY_DIR . '/jquery/ui/ui.slider.js');
Requirements::javascript('/mysite/javascript/myslider.js');

Add an appriopriately ID'd <div id="myslider"></div> in your template, create and init the object in the myslider.js file:

jQuery(document).ready(
	function() {
		// Prototype doesn't like $
		jQuery.noConflict();

		// Prep the slider
		jQuery('#myslider').slider({
			'stepping': 1,
			'min': 1,
			'max': 100
		});
	}
);

You should be off and running like a trademarked green tractor manufacturer's mascot.