[Plugin: NextGEN Gallery]

Hi!
I´m no expert on this things, but I got Galelrific working like this:
You download the “examples” galleriffic-2.0.zip to your theme folder (might wanna try twentyten theme firts) from here:
http://www.twospy.com/galleriffic/

you upload gallerific folder inside “nextgen-gallery” folder.
Then inside nggallery.php after this code

// required for the slideshow
		if ( NGGALLERY_IREXIST == true && $this->options['enableIR'] == '1' && nggGallery::detect_mobile_phone() === false )
			wp_enqueue_script('swfobject', NGGALLERY_URLPATH .'admin/js/swfobject.js', FALSE, '2.2');
        else {
            wp_register_script('jquery-cycle', NGGALLERY_URLPATH .'js/jquery.cycle.all.min.js', array('jquery'), '2.88');
            wp_enqueue_script('ngg-slideshow', NGGALLERY_URLPATH .'js/ngg.slideshow.min.js', array('jquery-cycle'), '1.05');

add this code:

// GALLERIFIC
wp_register_script('galleriffic' ,NGGALLERY_URLPATH. 'galleriffic/js/jquery.galleriffic.js',false, '2.0.0');
wp_register_script('jquery.opacityrollover', NGGALLERY_URLPATH . 'galleriffic/js/jquery.opacityrollover.js',false, '2.0.0');
wp_enqueue_script('galleriffic');
wp_enqueue_script('jquery.opacityrollover');
wp_enqueue_style('galleriffic-style', NGGALLERY_URLPATH . 'galleriffic/css/basic.css',false,'2.0','all');
wp_enqueue_style('galleriffic-style-2', NGGALLERY_URLPATH . 'galleriffic/css/galleriffic-2.css',false,'2.0','all');

then inside nextgen-gallery/view you create a template file called for example gallery-galleriffic.php with this code:

<?php
/**

@description Galleriffic (http://www.twospy.com/galleriffic/) template for Nextgen Gallery WordPress plugin
@author Kaarel Sikk

Template Page for the gallery overview

Follow variables are useable :

	$gallery     : Contain all about the gallery
	$images      : Contain all images, path, title
	$pagination  : Contain the pagination content

 You can check the content when you insert the tag <?php var_dump($variable) ?>
 If you would like to show the timestamp of the image ,you can use <?php echo $exif['created_timestamp'] ?>
**/
?>
<?php if (!defined ('ABSPATH')) die ('No direct access allowed'); ?>
<?php if (!empty ($gallery)) : ?>

<div class="ngg-galleryoverview" id="<?php echo $gallery->anchor ?>">

	<div id="gallery" class="content">
		<div id="controls" class="controls"></div>
		<div class="slideshow-container">
			<div id="loading" class="loader"></div>
			<div id="slideshow" class="slideshow"></div>
		</div>
		<div id="caption" class="caption-container"></div>
	</div>
	<div id="thumbs" class="navigation">
		<ul class="thumbs noscript">
		<!-- Thumbnails -->
		<?php foreach ($images as $image) : ?>
			<li>
			<a class="thumb" href="<?php echo $image->imageURL ?>" title="<?php echo $image->description ?>" <?php echo $image->thumbcode ?> >
			<img title="<?php echo $image->alttext ?>" alt="<?php echo $image->alttext ?>" src="<?php echo $image->thumbnailURL ?>" width="78" height="78"/>
			</a>
            <div class="caption"><?php echo $image->description; ?></div>
			</li>
		<?php endforeach; ?>
		</ul>
	</div>
 	<div style="clear: both;"></div>
	<script type="text/javascript">
			jQuery(document).ready(function($) {
				// We only want these styles applied when javascript is enabled
				$('div.navigation').css({'width' : '300px', 'float' : 'left'});
				$('div.content').css('display', 'block');

				// Initially set opacity on thumbs and add
				// additional styling for hover effect on thumbs
				var onMouseOutOpacity = 0.67;
				$('#thumbs ul.thumbs li').opacityrollover({
					mouseOutOpacity:   onMouseOutOpacity,
					mouseOverOpacity:  1.0,
					fadeSpeed:         'fast',
					exemptionSelector: '.selected'
				});

				// Initialize Advanced Galleriffic Gallery
				var gallery = $('#thumbs').galleriffic({
					delay:                     2500,
					numThumbs:                 15,
					preloadAhead:              10,
					enableTopPager:            true,
					enableBottomPager:         true,
					maxPagesToShow:            7,
					imageContainerSel:         '#slideshow',
					controlsContainerSel:      '#controls',
					captionContainerSel:       '#caption',
					loadingContainerSel:       '#loading',
					renderSSControls:          true,
					renderNavControls:         true,
					playLinkText:              'Play Slideshow',
					pauseLinkText:             'Pause Slideshow',
					prevLinkText:              '&lsaquo; Previous Photo',
					nextLinkText:              'Next Photo &rsaquo;',
					nextPageLinkText:          'Next &rsaquo;',
					prevPageLinkText:          '&lsaquo; Prev',
					enableHistory:             false,
					autoStart:                 false,
					syncTransitions:           true,
					defaultTransitionDuration: 900,
					onSlideChange:             function(prevIndex, nextIndex) {
						// 'this' refers to the gallery, which is an extension of $('#thumbs')
						this.find('ul.thumbs').children()
							.eq(prevIndex).fadeTo('fast', onMouseOutOpacity).end()
							.eq(nextIndex).fadeTo('fast', 1.0);
					},
					onPageTransitionOut:       function(callback) {
						this.fadeTo('fast', 0.0, callback);
					},
					onPageTransitionIn:        function() {
						this.fadeTo('fast', 1.0);
					}
				});
			});
		</script> 

	<!-- Pagination -->
 	<?php echo $pagination ?>

</div>

<?php endif; ?>

Then you create the gallery with nextgen (add some captiosn to it) and add the shortcode in a page:
[nggallery id=1 template=”galleriffic”]
(for the templates called gallery-galleriffic)

That´s how I get it working after reading lots of articles on the web and making my own corrections. I´m still learning how to change functionalities on this! I Hope its usefull to you.