These kinds of installation were possible before in Windows XP. Are they still possible with Windows 7? So far, all the websites I've seen say it requires at least that the OS be bootable (or maybe I misunderstood).
If it is possible, please enumerate the steps - my aim is to have a handy guide I can show to my colleagues if they ever need it. (So far we only have a few Windows 7 machines here in our office, and most of them are used by developers. Everyone else is still on XP.)
If there are related links here in SU, feel free to point them out. Thanks so much!