There are older programs that will simply not run under Vista or Win7, and when people have problems they assume it is because they installed the 64 bit version of windows, but that is not the case most of the time.
Sure you can do it, just not really sure why you would want, or even need.
And, if so, would they interfere with each other in any way (I would expect not, but maybe.).
Not sure why you felt the need to dawn of war soulstorm chaos daemons mod drag up a thread about 8 months old for this, because it is very much possible.A number of Loungers have posted that they have such versions of Windows 7).(Main Boot Record, MBR, conflict?).You can't have both running unblock me for pc game at the same time without using some kind of VM program, and in the case of a VM, then certain combinations to not work.How about this: I am aware of responses to a previous thread on this topic (also posted by me) such as eula"s to the effect of "one user per installation" One verision per user, etc.Presumably one could also do this via installation on a virtual drive?It just requires, as Edward already mentioned, that they be installed on different partitions/drives, which is something you should be doing as a general path of fewest problems anyway.(omitting eula restrictions for the sake of argument).Assuming ps3 update 4.5 to usb you have a copy of Windows 7 (with a eula that allows installation on more than one PC see the last paragraph of this post could you, for the sake of testing compatibility/suitablity issues, install Windows 7 32-bit AND Windows 64-bit as a dual.32 bit programs will run just fine under a 64 bit.If this, iS possible, it's one way to test if the 64-bit version is "for you" or not, without messing up your 32 bit installation.But this is an academic question : is a dual boot windows 32 bit and 64 bit setup possible?Of course, in my "Just for the sake of argument case any software tested with both OS-es would also be required to be used in accordance with each one's applicable eula.Like you cannot have a 64-bit guest OS on a 32-bit host OS, and you can't have a 64-bit guest OS on a 64-bit host.