The latest released version of USBDeviceShare, the USB over Ethernet software, supports sharing USB devices between 32 bit and 64 bit editions of Windows operating systems.
A USB device plugged in to a computer running 64 bit edition of Windows can be remotely accessed from a computer running 32 bit edition of Windows, and vice versa.
You can download and try the free 15 days evaluation copy of USB Device Share from http://www.sysnucleus.com/usbshare/usbshare_download.html