I sent you the file by e-mail, but to not keep the solution from other visitors, I'm posting it here as well.

A schema.ini file would work, but needs to be built very specifically - every field name needs to be manually assigned. (I 'anonimized the info below)

Col1="Fieldname 1" Text
Col2="Fieldname 2" Text
Col3="Fieldname 3" Long
Col4="Fieldname 4" Text
Col5="Fieldname 5" Text
Col6="Fieldname 6" Text
Col7="Fieldname 7" Text
Col8="Large field 8" Memo
Col9="Fieldname 9" Text
Col10="Fieldname 10" Text
Col11="Fieldname 11" Text
Col12="Fieldname 12" Text