For most would-be Windows 7 users, a 64-bit version of Windows 7 is the right move. But if you don’t have sufficient RAM (at least 4GB), or you rely on devices that don’t have supporting 64-bit ...

Here is a readme that says you can use this to install a 64 bit BIOS while on a 32 bit OS. So I would upgrade the BIOS, then add RAM, then upgrade the OS. (I would have stayed with a 32 bit OS so I ...