>Larry, I have also tried this on a field named "CLAIM_". The AERROR is returning: *** Column not found: CLAIM_
>
>I know the column exists, because I can use:
>QueryString = 'SELECT * FROM SOURCE WHERE RECORD_NUMBER= 15300'
>Results = SQLEXEC( handle, QueryString, 'TARGET')
>
>and this code returns 1 record with one of the columns being named CLAIM_
>
>The table I am pulling data from has several fields that end with an underscore which all give me the same headache.

I have seen VFP transform filed names to have "_" in them when the field had a space in it. Do the fields in question have ending spaces? If so, you may be able to encapsulate the field name in double quotes or [].

Ex.
QueryString = 'SELECT * FROM SOURCE WHERE [ID ] = 2514'
  or
QueryString = 'SELECT * FROM SOURCE WHERE "ID " = 2514'
Results = SQLEXEC( handle, QueryString, 'TARGET')

HTH.