Not going to happen. The upgrade versions of Windows do not come with a license. Instead, you transfer the license from your previous version of Windows to the new one (it's all automatic).
So, trying to install this as a dual boot would mean that your Windows 7 copy would be unlicensed, or pirated, and discussion of such things is against the rules here. You're two choices here are to either upgrade over XP or go back and buy the full retail version of 7 that comes with a license, and install that as a dual boot.
I have a PC with XP Home and wish to upgrade it to Win 7-64. I purchased the Win 7 upgrade version. Will ditch XP when happy with getting programs installed in Win 7.
I also have a new drive that I wish to do the install of Win 7.
My plan is to hookup new drive, place Win 7 DVD in drive and run the install in Custom mode. This should install Win 7 on new drive and preserve Win XP on the old drive.
To register Win 7, I have the serial info from the Win XP system and will insert when asked. I'm concerned about whether this method to register will work correctly as I was told that Win 7 must find a windows.old file on the installation drive. Will it work OK?
Anything special that I should know when doing this?