The Scroll Bars property can be altered in the Properties box (Format tab) while the form is in Design View. Set it to Neither.
Here is some code I use on a continuous subform's On Current event. I think it ought to work for a continuous main form as well.
Private Sub Form_Current()
Dim rst As Object
' This makes an exact copy of the current form's recordset
Set rst = Me.RecordsetClone
' This checks the number of records on this form
If rst.RecordCount >= 6 Then
' Don't let them add more records
Me.AllowAdditions = False
' Let them add records again
Me.AllowAdditions = True
Not sure how elegant it is, but it allows my users to have a maximum of 6 records. If they have six, they can delete one, which re-enables the ability to add a new record.
Hope this helps,