you're mostly right. The birthsigns were in dagger fall and arena though. You would get asked a series of questions in character
creation, each with three answers depending on the answers you gave you would either be under the sign of the thief, the mage, or the warrior.
But that didn't have any actual in game effect did it? As in, you answered questions and it just showed you which archetypal answer you had chosen. You never got a bonus for answering a bunch of questions with the "thief" answer.
Edit* This is a ninja thread! :toughninja: