You should always slipstream Service Packs before anything else. You are correct I believe IE7 requires SP2 minimum. I've noted in this thread http://www.ryanvm.net/forum/viewtopic.php?p=73960#73960 that XP with SP3 doesn't even list IE7 on Microsoft Update; not as critical or optional. Not until they fix it. So even if you manually install (or integrate) IE7 on XP SP3, you won't be able to tell if all of the current IE7 hotfixes are applied since MU also won't list IE7's hotfixes under SP3, from what I understand. Yeah I already figured that out!! Can anyone give a list of all updates released for IE7 since its release? I want to also integrate them because I can't get them from Windows Update (or Microsoft Update if you wich!).