How can i edit a cell comment..?

For j = 2 To v + 1
Sheets("Sheet1").Select
fault = Cells(j, 19).Value
Affecser = Cells(j, 15).Value
Range(num2char(col) & 3).AddComment.Text Text:=fault & "(" & Affecser & ")"
Next j

for each j value i need to append the respective fault value in the comment box...i need help regarding this..so any one who knows pls let me know its urgent..thanks to all for their support