ML>> have you looked at 7-zip?   
       
    DS> Yes I did.  It unzips PKZIP files fine.  But unless there is a setting I   
    DS> have not found, when it compresses files it does so in a 7Z format and   
    DS> not a PK format.   
      
    ML> some deeper searching seems to turn up a command line option -t...   
      
    ML> 7z.exe u -tzip classics.zip classics -r   
      
    ML> does that help?   
      
   Very much so -- thanks.  Now I have two possibles, 7z.exe with -tzip   
   switch and the zip/unzip from infozip.   
      
                                  Dale Shipp   
                     fido_261_1466 (at) verizon (dot) net   
                                 (1:261/1466)   
      
      
      
   ... Shipwrecked on Hesperus in Columbia, Maryland. 00:05:40, 19 Sep 2015   
   ___ Blue Wave/DOS v2.30   
      
   --- Maximus/NT 3.01   
    * Origin: Owl's Anchor (1:261/1466)