Is there a funtion I can use to automatically pick up the first business day
of the month based on a given date?

For instance, if today is 5/14/08, I would like a function to pull in the
first business day of the month (5/1/08), based on 5/14/08.

I have tried using the Workday function, but this function requires you to
put in the number of holidays you would like to exclude and doesn't always
work out.