NXT Dilema

My Question: What is the program to put a program onto the NXT brick and how does it work?
After searching online for the answer I found out that the program is RoboLab 2.9. It is an upgrade to Robolab 2.0 and up which has new icons and options which allow you to program the NXT brick. I have installed RoboLab 2.9 and I have made a program that waits for the ultrasonic sensor to sense an object in front of it moving closer to it, makes all motors move forward for 4 seconds after this, and then stops all motors.