I'm new to UnleashX and I've been trying to make a specific skin that, if possible, will play one of several videos for the background randomly when ever you start the system. But what I can't seem to find is IF this is possible. Does anyone have an idea or a link to a guide?

TANKZ!

Not sure if this will help as I suspect you're talking about skin creation rather than just skin editing.

However, I spent some time learning the basics of how to skin edit using UnleashX a few months ago and started a thread in the Official XBMC Skin Editing Forum here.

Sorry can't post a direct link but If you can find it Heimdall posted two links I found very useful. They may allow you to work out what is possible if not exactly how to do it.