I have some formulas at http://www.cpearson.com/Excel/BetterNetworkdays.aspx that allow you to
specify any one or more days of the week to exclude from the
calculation. There are two versions of the formula -- one that
supports a list of holidays to exclude and a second one that doesn't
support holidays, but calculates faster.
Cordially,
Chip Pearson
Microsoft MVP 1998 - 2010
Pearson Software Consulting, LLC www.cpearson.com
[email on web site]