Thankis Bob. its:
SELECT IIf(IsNull([Surname]),IIf(IsNull([First Name(s)]),[Company or Group],[First Name(s)]),IIf(IsNull([First Name(s)]),[Surname],[Surname] & ", " & [First Name(s)])) AS [File As], IIf(IsNull([Surname]),IIf(IsNull([First Name(s)]),[Company or Group],[First...