Most antivirus programs, in addition to letting you scan your entire computer for viruses, also give you the ability to scan individual files and directories.
Some antivirus programs require you to open the antivirus program, select the scan option, and then browse to the file(s) or directory(ies) you wish to scan. This works, but it’s not all that convenient.
Other antivirus programs have gone a step further: They have integrated their program right into Windows Explorer so you can right-click a file or directory and select the Scan for Viruses option without having to open your antivirus program at all. Cool huh?!