QuickTime and IE 5.5SP2 and above. Apple: QuickTime and IE 5.5SP2 and above “Microsoft Internet Explorer for Windows, versions 5.5 SP2 and 6.0 (soon to be released) no longer support Netscape-style plug-ins, such as the plug-in installed as part of QuickTime 5.0.2 and earlier versions. Consequently, Windows customers using these versions of Explorer who visit your site may be unable to view QuickTime content in the browser. To mitigate this problem and to ensure a positive experience for your Web site visitors, you should add to your site the HTML code that makes available the new ActiveX control for QuickTime, as described below.” [ZopeNewbies]