The two videos for routing stair frames were up on the woodworking channel in the Router Workshops section when I was there about half an our ago. Google Woodworking Channel, select videos, wait while it gets itself together, then look for a right arrow at the top of the WC display frame, click on this will give you more source options. Router Workshop is about the centre of the second set of sources, select them, and scroll through the titles.
James, there are no universal plans around to my knowledge as every stair setup needs to cater to the installation. Watching the videos will show you how to lay out the frames to suit, make a suitable jig, and do the routing one way, there are probably hundreds of different ways to achieve similar but different results.
Last edited by malb; 09-24-2010 at 08:58 PM.