No one can help you if you can't even properly describe the problem you're having.
And so the problem began. Personally, I don't think he's going to be able to install fastboot drivers if he doesn't even get the instructions to get his stock ROM installed again.
Why would anyone need to install a stock ROM to install a custom recovery? Why would anyone install a Blade III stock ROM to an Acqua (or V880E or whatever it is)?
Why would you need to 'root your phone'? Only thing you need is an unlocked bootloader accessible with fastboot (which all of these devices already have).
Because trying to explain how to install CWM (which I'm pretty sure he shouldn't bother trying, come to think of it) via fastboot is going to be utterly painful, without having the drivers installed, which I'm pretty sure he doesn't have. I think he ought to just get the right stock ROM tbh, and leave it at that. Unfortunately, the vast majority of ZTE ROMs from http://ztedevices.com/support are hosed, as you're aware, but not his apparently. But... It's odd.. the only entry under Malaysia (Digi) is only 18MB!!
Surely that wont do. Perhaps you can explain it to him, and you'll see what I mean. What to do Konsta? Because he won't be likely to want to use the adb interface to get this job done...