Select B2 to B171, and from the Menu Bar:
<Format <Conditional Format

Change "Cell Value Is" to "Formula Is",
AND, if I understand you correctly, enter this formula:

=AND(B2<"",B2=$F$4+180,$F$4<"")

Click on <Format, and choose a Pattern to your liking,
then <OK <OK.

If I misunderstood your request, try this formula instead:

=AND(B2<"",B2<=$F$4+180,$F$4<"")


--
HTH,

RD

---------------------------------------------------------------------------
Please keep all correspondence within the NewsGroup, so all may benefit !
---------------------------------------------------------------------------
"Derek" wrote in message
...
I have a worksheet that has dates in cells B2 through B171. I want to
highlight cells from a date that is in cell F4 + 180 days. I want to be
able
to change the date in F4 and the dates in B2:B171 to highlight
accordingly.
Please help. Thanks