Ideally, the Word document would look like this (I don't know how you
like to format SS numbers):
FirstName, SecondName, SSN
John, Smith, 123-456-789
Mary, Jones, 456-321-987
Eric, Peters, 333-444-987
with no character or paragraph formatting at all.
Then you
1) Save the Word document as plain text with no layout
2) In Access, go to File|Get External Data|Import
3) Follow the steps in the wizard.