The below Nokia MediaTek USB drivers will allow you to connect your Nokia phone to your Windows computer. After installing the MTK drivers you will be able to do advanced functions like do backups, flash roms and more with a USB cable. This is a MTK driver is also allows some Nokia phones act as a modem allowing connecting to the Internet from the computer in a remote location. There are many other third party software available for doing other modifications to the Nokia phones.
Download the zip file extract the contents and run the setup program.