If there should be no duplicates generated
(i.e. all 26 random possibles: AA to AZ must be unique)
here's one set-up to try

Using say, the rightmost 2 columns, IU & IV
Put in IU1: =CHAR(ROW()+64)
Put in IV1: =RAND()
Select IU1:IV1, copy down to IV26

Then within the same sheet:

To generate down a column
we could put in say A1:
="A"&INDEX(IU:IU,RANK(IV1,$IV$1:$IV$26))
and copy A1 down as many rows as required (up to the max of 26 rows)

Or, to generate across any row, we could put in say, A28:
="A"&INDEX($IU:$IU,RANK(OFFSET($IV$1,COLUMN(A1)-1,),$IV$1:$IV$26)
and copy A28 across as many cols as required (up to the max of 26 cols)

Pressing F9 will regenerate afresh
--
Rgds
Max
xl 97
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Singapore, GMT+8
xdemechanik
http://savefile.com/projects/236895
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"XLSUSER" wrote in message
...
I WANT TO ADD TWO RANDOM CHARACTERS TO ROWS IN A TABLE THAT ARE UNIQUE
SUCH
AS AB, AC, AD, AF, ETC..

CAN THIS BE DONE IN EXCEL?