I have some irregular text frames - they have steps in them, like a ziggurat. I'd like to set the vertical justification to center, but when I call up the Text Frame Options panel, this option is not available. So they are all justified top, which is obviously the default. Can I change this?
Yes, should have said: CS4, on a Mac. Am I out of luck?
Yes, you would need to upgrade. CS4 is becoming old and creaky, and is badly in need of being replaced.