This pertains to Windows Vista and Windows 7 only.  If you are running Windows XP then stop reading. If you are running Vista or Windows 7 and you are attempting use the “Upload Multiple Documents” feature of MOSS 2007 or WSS 3.0 to upload zip files you have probably noticed that zip files do not show in the upload explorer window.  The “Upload Multiple Documents” feature is an ActiveX control that installs with Office 2003/2007 so if you aren’t running either Office versions then the option won’t show up in SharePoint.  The problem with zip files and the ActiveX control...