Não, você não pode. Você precisará encontrar drivers de 64 bits para seus dispositivos. De Perguntas freqüentes da Microsoft :
If I'm running a 64-bit version of Windows, do I need 64-bit drivers for my devices?
Yes. All hardware devices need 64-bit drivers to work on a 64-bit version of Windows. Drivers designed for 32-bit versions of Windows don't work on computers running 64-bit versions of Windows.
To learn how to check for drivers, see Update a driver for hardware that isn't working properly or go to the device manufacturer's website. You can also get information about drivers by going to the Windows 7 Upgrade Advisor webpage.