Please help me anybody!

The picture of my problm is like this:
I have text file which is always getting updated on user input in the following
way,

date1,title1,message1
date2,title2,message2
date3,title3,message3
...
... and so on

Now, I want to call the last 3 lines in the text field so that I can edit them
and then append the same 3 edited lines to the text file. Here's my code:

'---------------------------------

Set myRead = myFSO.OpenTextFile(Server.MapPath("correction.txt" ), ForReading, True)

for j=0 to 2
myLine = myRead.ReadLine
mySeg = Split( myLine, "," )

Response.Write "<b>A</b>: " & " " &"<input type=" &""""&"text"&""""&" "& "name=" &""""&"rdate("& j &")"&""""&" "& "value=" &""""& mySeg(0) &""""&">" & " "
Response.Write "<b>B</b>: " & " " &"<input type=" &""""&"text"&""""&" "& "name=" &""""&"rtitle("& j &")"&""""&" "& "value=" &""""& mySeg(1) &""""&">" & " "
Response.Write "<b>C</b>: " & " " &"<input type=" &""""&"text"&""""&" "& "name=" &""""&"rmessage("& j &")"&""""&" "& "value=" &""""& mySeg(2) &""""&">" & " "
Response.Write "<br>"
Response.Write "<hr>"

next
myRead.Close
Set myRead = Nothing
Else
Response.Write "File not found!"
End If

'-----------------------------------------------------------------
The problem is its calling the first 3 lines where as I need to call last last 3 lines. And after that How can I store the edited data back to text file.
Please help me out anybody, with this.
Thanks in advance