How to install drivers for Newman N1 (MTK6577) on Windows 7 ?

I have an old smartphone Newman N1 which is built on MTK6577 chipset.
I have decided to learn how to flash a new ROM on Android device and I have chosen Newman N1 for my experiments.

But I was very confused due to impossibility to find a correct driver which will give me a possibility to work with smartphone through ADB (Android Debug Bridge) tool.

After a long time it was found a working solution.
I am using Windows 7 so all next instuctions are correct and will work only for Windows 7.

Steps.
1. Connect your smartphone to your PC through USB cable. Smartphone should be switched on.
2. Open "Device Manager" to see how a new device will be found. I found an unknown device with name "MTK "MT65xx Android device".
3. Choose "Update driver" and select manual update. 
4. Open the list of all devices and select "Android device" vendor. After that select "Andoid Composite ADB Interface" device.

I did not describe which exactly driver I installed because I did it too much times so I don't know how this driver was installed on my PC.

I hope this instruction will help you. Maybe I will write more details about this trouble.

Resources
1. http://forum.xda-developers.com/fire-hd/general/guide-install-windows-adb-drivers-fire-t3189000