No, you can use CF with a formula of

=COUNTIF(B:B,A1)0

in column A

and

=COUNTIF(A:A,B1)0

in column B


--
HTH

Bob

(there's no email, no snail mail, but somewhere should be gmail in my addy)

"PAL" wrote in message
...
Is there a way to highlight differences between to lists, but not change
them. Do you have to simply insert columns side by side and use
conditional
formating?