The quickest way but the least astheticly pleasing would be to have a table showing all the comments so far. Including in your submit button would be a Me.List.Requery command.
A better looking way would be to design a subform showing the comment and date, and place that into your form. Same thing as above, within your submit button have a Me.Subform.Requery button.
The SQL behind both the table and subform method would look like
ORDER BY TABLENAME.FIELD2;
*Assuming that Field2 is your date/time field.
The code behind your submit button would look like;
DoCmd****nSQL "Insert Into TABLENAME (TEXT1, TEXT2) Values (TEXT1, Now());"
' Note the above should say DoCmd. RunSQL without the space but DBforums keeps removing it...
Me.Text1 = ""
Me.Text2 = ""