The application itself is simply selected from the main Portable Apps menu (see http://www.brighthub.com/office/home/reviews/28335.aspx for more details). Any antivirus program is dependent on having an up to date database of threats. For this reason, the first time that you open the ClamWin application, it will prompt you to download the antivirus database.
Once this step is accomplished, the simple opening screen provides the following features:
1. The Menu bar offering File, Tools and Help menus
2. A tool bar to allow you to set the preferences, update the database, or scan either files or memory
3. A list of drives which you may scan using the button at the bottom of the screen.

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