This code is working well.

Code:
    if (%get == /favicon.ico) { 
      if ($exists($mircdirstats\favicon.ico )) { 
        echo -s Trying to send favicon.ico

        bread d:\mirc\stats\favicon.ico 0 224 &fav
        sockwrite idle.c &fav 
        sockclose idle.c
        return done | halt
      }
    }


The use of "/bread file 0 -1 %binvar" didn't work for me, so I used the fixed filesize.