The electronic version of the “New Big English-Russian Dictionary on Oil and Gas” is represented on the CD-ROM in the Lexique Pro program which is very convenient and easy in use and can be quickly installed on your PC without difficulties. 1. Insert the disk into your PC. 2. Click the file “New English-Russian Dictionary on Oil and Gas.exe” two times. The installation program will be started. 3. If the warning of the security system appears on the screen, click “Выполнить” (“Proceed”). 4. Then click “Next” 4 times on the icons appearing on the screen. 5. Click “Install”. 6. Then click “Finish”. 7. T The Dictionary is successfully installed on your PC. You can start searching for necessary terms concerning the “Oil and Gas” subject.