With the release of Windows XP SP1 (Service Pack 1) this week, companies who develop Java applets based on Java 1.1 can breathe a sigh of relief... at least for now. When Windows XP was first released last year, ISVs were dismayed to find that it was the first version of Windows since the early days of Windows 95 not to include a Java Virtual Machine (JVM). JVM allows Java applets to run in Microsoft's Internet Explorer browser.