That's why microsoft made it so SP1 cannot be integrated + as the other quotes say it will take time to update all the versions of vista (Home, Home Premium, Ultimate, etc..), and will be able to in SP2 (hopefully), so i don't think it will be illegal to integrate it they just had some problems... Basically they couldn't be bothered. Also when installing SP1 and read the agreements it says nothing about slipstreaming, integrating, updating offline image, etc.. You can recheck just to be sure. Extra quote - some good news... Hope you don't mind me posting this information, i did add the original link where i got them from so you can see more information. Hope this helps too Lego