Dizzi is right, you would be better off in the Carrara forum, but also theres not enough info in your question:

• What prop is it - a standard prop that anyone could load into Poser/Carrara and look at?
• Which version of Carrara are you using?
• Do the transparencies get into Carrara okay? (thats a problem sometimes)
• Have you tried copying the Colour channel (in Carrara) into the Glow channel? I don't know enough about the Poser texture system to know what makes the effects you are missing, but it could be that. You'll need to use Indirect Lighting in Carrara to get most out of the glow channel. If it doesn't show up apply a Multiply operator to the glow channel and put a Value (0 - 10000) in the Right Shader slot & experiment with various values.
• Applying Environment lighting (Edit menu) or Anything Glows (lighting button - last option) to the object might give you what you are after. Environment lighting can be quite slow, but Anything Glows isn't too bad, with lots of options for deciding what causes the object to light up (colour, glow or actual light) casting shadows and light range falloff.