Instructions
Head over to 2DRPG and download RM2K_RPG.zip. This is a compressed file that contains the RPG Maker 2003 installation utility.
Use Windows' compressed folder feature to extract RPG Maker 2003 and double-click the install file. Follow the instructions the on-screen wizard gives to complete the installation.
Double-click the shortcut that appears on your desktop following the installation to run RPG Maker 2003. Read the included help file or just browse around the program to familiarize yourself with the RPG Maker 2003 interface until you feel comfortable with it.
Write out a storyboard with the action for your game. If you run out of ideas, play a turn-based roleplaying game classic like "Chrono Trigger" or "Phantasy Star 2." Decide who the main characters will be, what their quest or object will consist of and who will antagonize them throughout the game.
Create your game using RPG Maker 2003's simple point-and-click scripting interface.