...looking at the last-modified date, right?
You could add those contact fields, however, this way:
SELECT c1.company, c1.contact, c1.key5, NT.* FROM NOTES NT, contact1 c1 WHERE nt.accountno=c1.accountno and (NT.USERID = 'goldmine') AND ((dateadd( day, datediff(day, 0, NT.CREATEDDATE), 0) >=...