conditional formatting weeks

You can't use Analysis ToolPak functions in conditional formatting so, assuming you don't have Excel 2007 you'd have to use WEEKNUM formula on the worksheet and then reference the result...

..or directly....for dates before this Monday use this as condition 1

=A1<TODAY()-WEEKDAY(TODAY(),3)

for dates this week use this for condition 2

=A1<TODAY()-WEEKDAY(TODAY(),3)+7

and then for any later dates condition 3

=A1>=TODAY()-WEEKDAY(TODAY(),3)+7

that works perfect; thank you!