You can also use Wings3D or Blender to do that, too. They're both capable of exporting in OBJ format, which should import into Poser pretty well. They're both mesh modelling programs, so they do a lot more than text, too. Of the two, Wings is much easier to get up to speed on, and Blender has a lot more options for the look and quality of the text. Both of them can use TrueType fonts, so you've got an almost infinite selection of text styles.

Captain Jack