Do different versions of Windows require different blocker toolkits (and corresponding registry settings)?
A. Windows XP SP2 used a unique registry setting for the original blocker tool in 2004/2005. Windows Server 2003 Service Pack 1 and Service Pack 2 used the current registry setting. Microsoft will use the same registry setting for Windows Vista SP1 and Windows XP SP3 in 2007, and anticipates at this time continuing to use this same registry key for future service pack blocking tools. If you previously downloaded the XP SP2 blocking tool, you will need to download the current version for use with Vista and XP SP3.