Hey Kevin,
I remember a post on March 8 where I posted some code to do something similar. This should give a reasonable accurate number for you. It starts with the day after sDate and counts days up to and including eDate.
<cfset workDays=0>
<cfloop index="x" from=1 to=#datediff("d",sDate,eDate)#>
<cfif dayofweek( dateAdd("d",x,sDate)) neq 1 and dayofweek(
dateAdd("d",x,sDate)) neq 7>
<cfset workDays=workDays + 1>
</cfif>
</cfloop>
Hope this helps,
GJ