SQL with no headers

[Seth]

How do you use a WHERE statement if a table has no
headers?

i.e., say there is a table called "EMPLOYEES"...I know
that the first column is FirstName and the second column
is LastName, but these are not headers...so the recordset
simply starts with the first name in the range.

Is it possible to use a WHERE criteria with no headers in
this case? I don't know how to identify the fields when
there are no headers.

Thanks,

Seth