1. Using browser window
1) Click "Browser" tab on WinMount main window, select files you want to be compressed, click "Compress";
Or click "Commands -> Compress" on the main menu;
Or right-click a file on browser window, select "compress";
2) pop-up the "Compress setting" dialog, set as you want, select ZIP. ( Following picture takes mou for example )
2. Using right-click menu
Right-click the files you want to be compressed, click "Compress"