XP SP3 requires IE7, Microsoft Warns
...IE7. If you go to Control Panel, Add/Remove Programs, the Remove option will be grayed out
The inability to downgrade to IE6 after installing XP SP3 was by design, said Maliouta, because the service pack includes newer versions of the old browsers files. If Microsoft had allowed users to revert back to the pre-SP3 version of IE6 the one saved...
