That's close but not quite the easiest way. Do a search on your username, change it to all forums (in case your first post was in a forum you don't have in your default search list), ascending order, and then by posts - that will take you right to your first post. That will work for anyone that joined after February 2001, for people that joined prior to that it may not find your first post because the majority of posts made before that date are under the username Archive because of a prior webmaster that removed those messages due to server issues and when I restored them I had to pull them all in under one username (only way I could do it).