Is It Possible To Make A Clean Installation After Purchasing Windows 7 Upgrade?
I have Windows Vista Home Basic on Drive C. If ever Windows 7 Home Premium UPGRADE DVD or OEM will be available, can I clean instal it on Drive F (second partition of hard drive) without erasing Windows Vista? Is it also possible to install a 64 bit win7 into that partition? HOW??

You can do a clean install from the Upgrade disc. The upgrade disc comes with both 32 and 64 bit versions.
You can clean install if you have a full installer DVD, or OEM.
It is not possible with Upgrade version.
If you have a 64 bit chip on your computer, you can install 64 bit version.
Of course it’s possible. it’s simple. just put in the windows 7 dvd and restart and BOOT FROM IT. then install. it’s that simple.