Vflo™ Hydrologic Analysis and Prediction Vflo™ Basic Download Includes a free 30-day license STEPS 1. Download the installation executable: Vflo Basic 2. Run the Executable to Install the Program. 3. Run the LicenseString executable (LicenseString.exe). It will be present in the start menu. Save the text generated (LicenseString). It is required to receive a valid license. 4. To receive a valid license, click here. 5. You will receive an email with a valid License. Place this file in the install directory: VAI | VfloBasic 6. Help and Tutorials are available from the Vflo™ Help menu. Tutorial Data will be copied to the install directory. Use the Vflo™ Message Board for help or to ask questions. Enjoy! For more information please contact us.