I've already solved my problem.

I wanted to know where WinZip32 is installed. why? To be able to execute it... I need to distribute the app so I can't hardcode the winzip path.
So now, I get all the hard disks letters, then check them out until I find the exe file...
if not, it raises an error.

after i get the full path , I use it with APPRUN API to zip files...

ok?

fabian