Find the obj for the charcter you want to dress and import it into your 3d modeling program. If you are using a character that is morphed so that it doesn't match the obj it's created from you will need to export it from poser and then replace the model from the orinal obj with it so that it's aligned in the same location as the original in your modeling program. Then model the clothes around it and delete the character. The tutorials will tell you the rest about how to get it into poser. I told you all this cause I've found that no matter how perfectly the clothes fit if they don't line up with your character without moving them..they won't conform well.