Hiya Pammaw
Im gonna guess you havent done anything wrong its just that msn sometimes plays mean tricks on us and we cant post anything.
Just click the add and agree to comply at the top of the page similar to what you would do when your on the daily thread or something and say what you want to say and then click add at the bottom.
If it doesnt send message then its more than likely msn playing up.
I hope that helps.
Bridget.xxx