You can do a All-in-one x86 + x64 ISO with Win Tools, but I think you shouldn't bother. Various reasons: -It's unlikely it will be small enough to fit in a DVD. I have a Ultimate x86 + x64 ISO (without any additional updates/addons/drivers and without SP1) that is around 4 gigs, for example. Will everything fit in 700 megs? hmmmmmm..... -DVD are slooow. DVDs are soo old school these days. Any computer that isn't 10+ years old can boot from USB, and any USB memory device (even HDDs) is pretty damn faster than any DVD. On the net you can find plenty of guides and programs to place your Win 7/8 ISOs on a bootable USB drive. The best so far seems to be YUMI since it allows you to multiboot and add tons of other useful tools in your USB drive. For the older BIOS that refuse to boot from USB, you just need a CD with plopboot. -I'd rather not make a All-in-one x86 + x64 ISO, since to do that most programs (and I think this one as well) let you decide the "main" WIM and add the other on top of that. This means you can use the ISO to install both, but does not allow you to use the ISO to troubleshoot/repair the added WIMs. That is, if you add a x64 WIM on top of a x86 WIM you can install both, but when it's time for fixing something, that's a x86-only disk. (and the same if you do the reverse). -------- My personal project (that brought me here) is to make two ISO files able to install all flavors (from starter to Ultimate, a fully-updated/addon/driver x86 and a fully-updated/addon/driver x64, then make a multiboot USB with YUMI to fit both on the same drive allowing both to be used for installation and troubleshooting, while being also bundled together with other useful tools like DBAN, Memtest, Offline NT password and registry editor, and a Linux Puppy just in case.