I have a installation dvd that installs both x64 and x86, the user can select during install. I have it on my usb actually, i just use that to install on several machines, i am going to slipstream service pack and make trim the install using rt seven but i wanted to know if i can keep the dual option during install. I definitely want to slipstream and apply tweaks, but if that means i have to keep 2 usb drives instead of my current usb tat will be horrible. Its so easy and fast with usb.