Second google result has an example from Microsoft. Creating Users with Active Directory Lightweight Directory Services (Windows)
For future reference, this is the type of question that is easily answered by asking google. You'll learn a lot more by doing research yourself first and you'll find the answer faster rather than waiting for someone else to google it for you.
If you get stuck on a specific piece of the code, come back and ask a new question and post the relevant code and be very clear as to what you need help with.