If you’re new to VS snippets, you can get the skinny here. To use them you just install the .vsi (see link above) and then type the snippet shortcut (e.g. sldp), hit tab a couple of times to kick off the snippet and then start providing the values it asks for (hit tab to move between values). When you’re done, hit enter.
The Short Descriptions
Here’s the short guide to the snippets. A little more detail follows.
A basic Silverlight DependencyProperty
A Silverlight DependencyProperty with a property changed callback
An attached Silverlight Dependency Property
A really basic event definition
An inline, anonymous Storyboard.Completed handler (check this one out, it’s cooler than it sounds)
A really simple implementation of a panel
A super basic collection class that loads an RSS feed
The boilerplate code you need to create a value converter