found this for you..

Ole P. Erlandsen wrote on April 27, 2003 04:29 EST
If you want to use functions from the Analysis Tool Pack addin in your
own macros:
- Open the VBE (Alt+F11).
- Activate the project where you want to use the function(s).
- Select Tools, References... and check the option atpvbaen.xls.
- click the OK-button to close the References-dialog.

The macros in the workbook where you added the reference to the
atpvbaen.xls library can now use the functions like this:

workdaycount = networkdays(Date, Date + 14)

Or like this to avoid conflict with other user defined functions with
the same name:

workdaycount = [atpvbaen.xls].networkdays(Date, Date + 14)

It is not necessary to install the Analysis Tool Pack addin from the
menu Tools, Add-Ins...

The DATE() and YEAR() worksheet functions are not necessary in VBA where
you use the built-in functions Date and Year:

Today = Date
Tomorrow = Date + 1
CurrentYear = Year(Date)
NextYear = Year(Date) + 1



keepITcool

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"archangel" wrote:

how do I use a function from an addin in my vba code. For example, I
have the "Analysis ToolPak - VBA" addin installed and I want to do
something like:

NumOfDays = worksheetfunction.networkdays(startdate,enddate,my range)

this line of code doesn't work because networkdays is in the
"Analysis ToolPak - VBA" addin, not the standard worksheet functions.