Probably just one way among others:
Place in the detail section a textbox control =1 .Set itsvisible property to no, its running sum property to "On Group" (I am translating from French, not sure how it reads in English).
Then, using the On_Format Event of the detail section:
If (Me.txtHiddenRunningSum Mod 2)=0 then
Me.Section(0).BackColor = 255
Else
Me.Section(0).BackColor =16777215
End If
Alex
[This message has been edited by Alexandre (edited 03-12-2002).]