If you type PSP text as vector, you can go back and edit it (if you save the layout as a PSPIMAGE), otherwise you have to delete the layer that the text is on and redo it. I usually do my text on a new layer. If I want justified text, I create in Digital Image Pro, save as a PNG file and open it in PSP to add to my layout (resizing - or recreating until I get it right). I just ordered X2 - don't know if there's a fix yet.
But! If you use the pen tool (which is Vector) and draw horizontal lines across your page (or area) - then change to the text tool and hover over the first line until you see the curve under the A that "means" you'll be typing on a path - your text will stop at the end of the first line and continue on the next - for as long as your text is and until you run out of lines that you created. I can create an example (will post it tomorrow).
. . . Pam