Anyone a user of the Ecotune IFlash system?

Hi folks, need some help.
I have the full Ecotune DPF / Cat /EGR delete and remap on my E60 530D which came with the IFlash system but I am missing the windows drivers so when I connect the USB lead my computer is unable to recognise the IFlash module.
I've contacted Ecotune but they keep sending me the actual IFlash software which is useless without the windows USB driver.
Can anyone point me in the direction of where I can find this driver please?
Here is a link to the unit itself:
IFlash

Appreciate any help!