HOW TO CHANGE MAC ADDRESS ?

every network interface card(nic) have this mac address
this number was given by the manufacturer
usally a mac address is written in a 12 digit hexadecimal number
for example 00-13-3f-7f-d7-27
to find mac address winkey+r-->cmd--->ipconfig /all

address resolution protocol(arp):-

arp is used to fin the mac address of a system of victim when ip address is known
to view arp table on the computer
to find this arp winkey+r--->cmd-->arp -a


mac address spoofing:-

this means to change the mac address follow 3 steps
step 1:- winkey+r--->ipconfig /all and note down the mac address
step 2:- download the ether change too from the site http://ntsecurity.nu/toolbox/etherchange/
step 3:- now in cmd go to the location which you install the ether change and type ether change
and follow the steps
step 4:- now disable and again enable the connection of network adopter now mac address is changed

NOW THE OTHER WAY TO CHANGE THE MAC ADDRESS MANUALLY

step1:-go to regedit and follow the location
[HKEY_CURRENT_CONFIG\System\CurrentControlSet\Control\Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}]

step2:-under this key there will be serval 4 digit sub keys each represeting a perticular n/w adopter
and whose mac address you want to change should be search manually by a key
called 'driverdesc'press control+f and type driverdesc yopu can see each adoter search
until you get desired adopter.

step3:-on right hand pane you need to create or edit the string key named 'network address'
note:-data type should be reg_sz

step4:-value of the string should be the new mac address
note:- valu should be between a to f and 0 to 9 only other values comes to zero

step5:-now disable and again enable the connection of network adopter
now mac address is changed