Not really a good solution but it might catch most of them
=EXACT(UPPER(LEFT(A1,FIND(",",A1)-1)),LEFT(A1,FIND(",",A1)-1))
assuming that the format of a name is always the same with all caps last
name, comma and first name
of course if the comma is unique to the each occurrence of an all caps name
then you could use
=ISNUMBER(FIND(",",A1))
--
Regards,
Peo Sjoblom
http://nwexcelsolutions.com