PC Tools Dictionary

The PC Tools Dictionary provides an extensive online reference with definitions and terminologies for Windows® terms and technical computer phrases. Get started by searching or browsing the definitions below:

Hardware Computer Hardware and Peripherals	Internet Internet and Online Services	Networks Networking and Communictions
Programming Programming and Software Development	Software Applications and Programs	Windows Windows Operating System

What is the index.dat file? New
The index.dat file is hidden database used by Microsoft Internet Explorer 4, 5 and 6 to record information about Internet sites that have been visited and details of cookies being stored on your computer.

Outlook Express Backup New
Email backup is the only way to ensure our precious information survives the unforeseen computer crashes, software glitches, hardware failures and power outages.

Registry Error New
If you haven't seen your computer crash and display registry error message it doesn't mean that you don't have registry errors on your PC. It might be just a matter of time!