"Simple enough," Elias muttered, reaching for his ethernet cable. He plugged it in, expecting the automatic Windows Update to do its job.

He rebooted the Toughbook. The Windows XP startup chime rang out, crisp and clear over the sound of the rain.

"Offline installer," he whispered to himself. "I need the full package. Not the web bootstrapper."

An (also called a full redistributable or full package) contains all CAB files and MSIs locally. You copy one large .exe file to the XP machine via USB or network share and run it directly.