Het is me gelukt, voor degene die er interesse in hebben is hier de code.
Dim Naam As String
Dim db As Database
Dim rs As Recordset
Set db = CurrentDb
Set rs = db.OpenRecordset("Tabelnaam")
While Not rs.EOF
rs.Edit
rs("[NAAM]").Value = Replace(rs("[NAAM]"), "÷", "ö")
rs("[NAAM]").Value = Replace(rs("[NAAM]"), "Ú", "é")
rs("[NAAM]").Value = Replace(rs("[NAAM]"), "Ù", "ë")
rs("[NAAM]").Value = Replace(rs("[NAAM]"), "³", "ü")
rs("[NAAM]").Value = Replace(rs("[NAAM]"), "±", "ñ")
rs("[NAAM]").Value = Replace(rs("[NAAM]"), "Ý", "í")
rs("[NAAM]").Value = Replace(rs("[NAAM]"), "¶", "ô")
rs("[NAAM]").Value = Replace(rs("[NAAM]"), "Õ", "ä")
rs("[NAAM]").Value = Replace(rs("[NAAM]"), "¾", "ó")
rs("[NAAM]").Value = Replace(rs("[NAAM]"), "¹", "û")
rs("[NAAM]").Value = Replace(rs("[NAAM]"), "ß", "á")
rs("[NAAM]").Value = Replace(rs("[NAAM]"), "þ", "ç")
rs.Update
rs.MoveNext
Wend
MsgBox "Leestekens veranderen is voltooid", vbOKOnly, "Leestekens veranderen"
rs.Close
db.Close