=IF(ISNUMBER(MATCH(A1,'[Phones.xls]Sheet1'!$A$1:$A$20,0)),"Yes","")

gets the value in A1 and looks it up.
--

HTH

RP
(remove nothere from the email address if mailing direct)


"Richard" wrote in message
...
Hi,

Can anyone Help ?

I have a spreadsheet with a list of phone numbers amongst other data
columns, I want to look-up those phone numbers in another spreadsheet and
if
it finds the same phone number return a value of 'YES'.

I have tried the usual look-up functions and am not sure if I need to be
using 'Match', or another formula ?