Run the ooVoo Setup application
A window will open asking what you want to do with a file called ooVooSetup.exe. Click 'Run'.
Follow the Setup Wizard
When the download is done, click on the ooVooSetup.exe file from the IE Downloads window to open the ooVoo Setup application. (Alternatively, you could open it directly from the location you saved it which is typically your desktop). The ooVoo Setup Wizard will appear and guide you through the rest of the installation.
Launch ooVoo
After the installation has finished, you can open ooVoo at any time by clicking the icon on your desktop or in your system tray.