HI

I am trying to count the total of leave taken without the holidays
and
the weekends
i have used the NETWORKDAYS but i dont know what is the formula in
order to have a total
of vacation taken excluding weekends and holidays so this is the
table
that i have

i am using network days but its not working

Total =NETWORKDAYS(B17,C17)
B= from
C=To

Holidays

Example
                    B                            C
C52     New Year                        1/1/2008
C53     Labor Day                       1/5/2008
C54     Independence Day           22/11/2008
C5     Christmas                       25/12/2008

PLEASE ADVISE
TIA