Rob is correct that you do not need to install any USB drivers for the UCR200.
This is because the UCR200 using a HID (Human Interface Device) interface which is built into Windows.
So, you do not need to install any USB drivers for the UCCNC and also not for Mach3.
The UC100 is different, because it requires a higher speed communication, so it has it's own driver which has to be installed for the UC100 to work.
The UCR200 will run with even an unlicensed UCCNC and an unlicensed Mach3, but ofcourse the same limitations will apply which normally applies to the softwares when they are unlicensed.
For the UCR200 to work with the UCCNC you have to enable the UCR200 plugin and then Close and Open the UCCNC to let the plugin run. The UCR200 plugin installs with the UCCNC, no need to install anything else.
On the plugin page you can find different settings and also you can see if the UCR200 is connected.
For Mach3 you have to install the UCR200 plugin, you can do that with our UCx00 automatic installer:
http://cncdrive.com/MC/UC100%20full%20a ... 0setup.exe