I need a 64bit driver for the 1760-USB-Pico cable, the software comes with 32bit one.
I have checked for drivers, but couldn't find any. In this case, I recommend downloading the PicoSoft application. It's possible that it might contain all the necessary drivers you need.
Download page: http://compatibility.rockwellautomation.com/Pages/MultiProductDownload.aspx?keyword=picosoft
Note: You need to register in order to download the application, because the download is protected with a username and password.
I have the driver for 1760-usb-pico 32 bit and 1760-usb-GFX 32 bit.
I had to install a virtual windows (Windows XP).