Office 2000/XP/2003
The FAST Workbooks by Ross, Westerfield & Jaffe have been thoroughly checked for viruses by leading anti-virus software products.
You can use these templates with confidence. The Office 2000/XP templates have digital signatures to further represent this
protection. When you make an initial attempt to load a Spreadsheet Template in Office 2000/XP, you will be warned that the
file contains macros, as illustrated below.

Click here to view a larger version of the image above.
To select KMT Software, Inc. as a trusted source, select the check box titled
Always trust macros from this source. After doing this, select the
Enable Macros button. If you do not accept the macros in this trusted
manner, the templates and add-ins will be loaded without the macros and will not
work correctly.
Selecting the option Always trust macros from this source adds KMT
Software, Inc. as a trusted source, which means that macros provided by KMT
Software, Inc. will always be enabled and loaded without having Microsoft Office
warn you about the macros it has detected.
Office 97
By default, Office 97 macro security is much less stringent. When Office 97 senses macros in a file, it prompts the user to
“enable” or “disable” the macros. The files will not work correctly unless you enable the macros. To check your security level
in Office 97, select Tools | Options and click the General tab.
See illustration below.

Click here to view a larger version of the image above.