Select the desired range (ie A1:M999)
FormatConditional Format Formula is
=AND($a1<"",$b1<"",$c1<"",$c1<"",$D1<"",$e1< "",$f1<"",$g1<"",$h1<"",$i1<"",$j1<"",$k1<"" ,$l1<"",$m1<"")

HTH
--
AP

a écrit dans le message de news:
...
If I have:

A ¦ B ¦ C ¦ D ¦ E ¦ F ¦ G ¦ H ¦ I ¦ J ¦ K ¦ L ¦ M

------------------------------------------------------------
row 1
row 2


Once all cells in row 1 (from A1 to M1) have something inside, I want
the row to change color.

I also want this conditional formatting to apply to every subsequent
row in the sheet as more info is added.

Any ideas?

Thanks