Some files can contain viruses or otherwise harm your computer.
If you run this program or open this file now, and it causes your computer or other programs to shut down, you could lose unsaved work in any open files on your computer.
If you save this file or program to disk, you can run it later. This allows you to take precautions such as the following before you open the file or run the program:
For the most security, make sure the Always ask before opening check box is selected. If you feel confident that this type of file or program is always safe to open or run directly from the Internet, make sure this check box is cleared.