need advice how to do this

hi all i need some advice
i good except for two thing
1 i don not wet $x in the output
2 $len i try to get the length of  each string before it goes to the 
clip board because if it under 8 i need to add 0 to the output thanks 
for any help

#include <Array.au3>


; stick what is in the clipboard into a variable
$msg = ClipGet()
MsgBox(0, "Clipboard contains:", $msg)

; split the variable's contents into seperate lines
;   you will probably need to play with the delimiter
;   to get the exact results you want, @CR and @LF
;   are other possible options here
$delimiter = @CRLF
$msg_array = StringSplit($msg, $delimiter, 1)
_ArrayDisplay($msg_array, "Lines in the clipboard")

; loop through the lines in the array grabbing what you need
; and appending it to a new variable
$output = ""
For $x = 1 To $msg_array[0]
    $output = $output & StringLeft($msg_array[$x], 8) & $delimiter
$output= StringReplace($output,".","")
$len = StringLen($output)
MsgBox(0,"",$output)
Next

; stick the new variable back into the clipboard
ClipPut($output)