New members need to have their posts approved by a moderator before they appear. Be patient and your post will be displayed in the forum when a moderator gets around to reviewing it. There is no need to post multiple times (in fact this is frowned upon). Take the time while you wait for your post to appear to have another look around the forum (because your had your first look around before posting your question, didnt you?), check the existing HowTos and Tutorials. You may find that your problem has already been solved by someone else.
It is also possible that the moderators felt that your post was not of a high enough standard, added nothing to the thread posted in or was in breach of the rules. In which case it may not appear at all.