ok im taking a stab at a possible solution ......
im not sure if tis possible to get modified file date ..... but if there is ..... try running a check on that and adding it to a .txt file in ur mirc ........ then when u open or ON start ...... check to make sure these modifacation dates match .. if not shut down ....... now i dont know if its possibkle but its about all i can think of ....... aside from running filesize checks like uve already tried .......
