Visual Basic

<br />
set ws = Wscript.Shell<br />
arg1 = ws.Arguments[0]<br />
arg2 = ws.Arguments[1]<br />

<br />
Dim strExtnOnly as string = ".txt"<br />
Dim strFileNameOnly as string = "test"<br />
Dim blnDone as Boolean = false<br />
Dim strDest as string = "Your destination folder"<br />
dim intCounter as integer= 1<br />
<br />
do while blnDone = false<br />
  strFullPath = strDest & "/" strFileNameOnly & strExtnOnly   <br />
  if File.Exists(strFullPath) then<br />
    intCounter+= intCounter<br />
    strFileNameOnly = strFileNameOnly & CStr(intCounter.ToString.padleft("0",2)) ' something like that<br />
  else<br />
    blnDone=True<br />
  end if<br />
loop<br />