First start up Konsole , write Ifconfig and press Enter.

Now locate your network interface.In my case it was eth0

Now write " macchanger --mac macyouwanttofake interface " and press enter.







Now reconfigure your network settings.
Use dhclient interface




You might get a message along the lines of  " You're not authorised to use the internet on this computer " when you try to go to a website in that case you need to call your ISP to activate their services on the new MAC.