Help!

I need a bit of advice/help wit a 12" Starliner cass/newt I recently picked up. Perhaps someone out there can give me a few tips-or better yet, a copy of a Starliner manual. My initial problem is how do you set up and collimate it in the cassegrain configuration? It has adjustments at both the primary and secondary locations. I assume I start at the secondary as in a newt but have no idea how to determine when it is "spot-on." Is this laser territory? Sight tube? Chesire eyepiece? Any help you can provide would be greatly appreciated!