One of the most useful features of e-mail is the ability to send digital files. But once you receive an attachment, how do you open it? The answer depends on the type of file and how your computer is configured.
All digital files have names, such as "balloon1.jpg." The letters after
the "." are known as the file extension and indicate which kind
of program can open the file. For instance, you can view a .jpg photo file
with your web browser or a picture viewer and listen to an .mp3 music file with Windows Media Player and iTunes, among others. The most common types of files sent over the Net
A web browser, Office Picture Manager, image editing programs
.mp3 .mpg .ra .wav .wmf
Windows Media Player or iTunes Windows Media Player RealPlayer Windows Media Player or iTunes Windows Media Player
.avi .mov .qt .ram
Windows Media Player QuickTime QuickTime RealPlayer
.doc .xls .pdf
Word Excel Acrobat Reader
To learn more about file types and for a comprehensive list, refer to the File Formats article.
Attachments may conceal viruses. Unless
you the sender, DO NOT OPEN IT. If your computer has an anti-virus program
running, it should automatically check for viruses.