This post is part of the series on Balsamiq Mockups 3.
Once you have downloaded Balsamic Mockups 3, launch the file and click the Install button:
Once the installation is finished, leave the Run Balsamiq Mockups 3.exe, click Finish:
Balsamiq Mockups is built using Adobe AIRm so on first run of the client you will be prompted to install it; click I Agree
Balsamiq will then launch and show a new project window.