Ok, I have googled my problem. Found the solution to the digital driver signing problem, and got all my other Arduino boards working just fine. Arduino Diecemila, Mega, Nano etc etc.
But when connecting my Arduino UNO it just says:
The drivers for this device are not installed. (Code 28)
To find a driver for this device, click Update Driver.
I tried pointing it to the latest FTDI driver folder, but it just won't do the trick. So I'm hoping anyone here have a solution? Help?