Many, many years ago, Microsoft enabled the ability to create macros in its Office products. On the surface, macros are great and can help automate a lot of tasks in the programs to make life and processes quicker and easier. As the abilities of the macro language have expanded in Word and Excel to include some very powerful features, virus writers have taken advantage of that fact and used them as delivery mechanisms for all sorts of nastiness. They have taken to using them in attempts to infect your computer via web sites and email. So the question becomes: How can you tell a macro-enabled Word or Excel file from a regular file?