if u want a real program with very little or no problems or exploits in it i suggest u get and use winrar 3.42 the newest version... i used to use winzip and hated it with how slow and shitty it is... after a while of using winrar i found that the zipping and unzipping of files is very quick and easy to use and never had any problems with using it... plus i just made a zip file with over 30 packs of notes and other zipped files included and it compressed them into a zip file in a matter of seconds and not minutes...