Can I use A97 DateGrouping property to find Sunday date for any week?

[MLH]

The US default value for DateGrouping property in A97 is Sunday.
Knowing that, what's the simplest way to feed any date (MyDate)
to a FN and have it return the date of the first day of the week in
which it falls?

IE, feed #7/6/2005# to the FN and have it return #7/3/2005#

[MLH]

Never mind. I found something out on the web that Getz came up
with that works nicely.

GetFirstDayOfWeek = dtDay - WeekDay(dtDay, vbWeekStartsOnDay) + 1