Use the following syntax to extract .exe files.  [ filename -d path ] Use this 
syntax minus the brackets.
     
Any files that end with a .zip should also be extracted with the switch -d$ this
restores subdirectories and volume lables.
     
Use the following syntax to extract.  [ pkunzip filename -d$ path ] Use this 
syntax minus the brackets.
     
If either a .exe or .zip is password protected you will need to add -sXXXXXXXX 
an addition 
to the other switches.  [ pkunzip filename -d$ -sPASSWORD path or filename -d 
-sPASSWORD path ] Use this syntax minus the brackets.