Regarding the earlier thread expressing puzzlement over building a small set of stairs: those who want to do this but don't know how to go about it should realize it ain't rocket science. Heck, even a klutz like myself can figure it out.
Without going into all the gory details on how to lay out stringers (a topic that is very well covered out there in Web-land, as well as in print publications), I'd just like to point out that there's a tool that makes this task very much easier: a simple set of stair gauges, like these:
These handy li'l things clamp onto the edge of your framing square, defining the rise (riser) and run (tread) of your stringer. After doing the measuring and figuring, these make actually laying out the stringer a piece of cake.
I've actually used these a few times, and in all cases I only had to cut one set of stringers. I highly recommend them.