Instructions
Download a maps pack from CNC Labs' Generals World from the "Downloads" page on the website (See Resources).
Double click to extract all files into a folder. Leave this folder window open.
Find the "Maps" data folder for "Command and Conquer: Generals" in your My Documents folder. The directory commonly appears as "C:\Documents and Settings\Your User Name\My Documents\Command and Conquer Generals Data\Maps."
Drag the map files from the desktop folder to the "Maps" folder for "CNC: Generals."
Launch "CNC: Generals" and choose "Skirmish" or "Multiplayer" to select the new maps from the list.