Two tips to change the MACaddress of your NIC on Windows XP

You can try two ways to change the MAC address of your Netwirk Adapter in Windows XP

1. Use the control panel

• Open an MSDOS prompt (Start->Run->cmd)
• Type ipconfig /all, you should see something like this:

C:\Documents and Settings\Administrator>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : duffy
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : DUFFY.DOM

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : DUFFY.DOM
Description . . . . . . . . . . . : AMD PCNET Family PCI Ethernet Adapter
Physical Address. . . . . . . . . : 00-11-22-33-44-55
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 10.0.2.16
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 10.0.2.2
DHCP Server . . . . . . . . . . . : 10.0.2.2
DNS Servers . . . . . . . . . . . : 10.0.2.3
Lease Obtained. . . . . . . . . . : Friday, December 12, 2008 16:51:52
Lease Expires . . . . . . . . . . : Saturday, December 13, 2008 16:51:52

• Note the current physical address of your NIC Adapter.
• Go to Start->Settings->Control Panel and double click on Network Connections
• Right click on the NIC you want to change the MAC address and click on properties.
• Under “General” tab, click on the “Configure” button
• Click on “Advanced” tab
• Under “Property section”, you shall select “Network
  Address” or “Locally Administered Address”
• On the right side, under “Value”, type in the New MAC address you want to assign to your NIC without any “-”. (for example type “554433221100″)
• Goto command prompt and type in “ipconfig /all” to verify the changes. If the changes are not materialized, then use the second method. You should see something like this:

C:\Documents and Settings\Administrator>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : duffy
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : DUFFY.DOM

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : DUFFY.DOM
Description . . . . . . . . . . . : AMD PCNET Family PCI Ethernet Adapter
Physical Address. . . . . . . . . : 55-44-33-22-11-00
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 10.0.2.16
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 10.0.2.2
DHCP Server . . . . . . . . . . . : 10.0.2.2
DNS Servers . . . . . . . . . . . : 10.0.2.3
Lease Obtained. . . . . . . . . . : Friday, December 12, 2008 17:51:52
Lease Expires . . . . . . . . . . : Saturday, December 13, 2008 17:51:52

2. MacMakeUp

This is an application with a GUI interface that allows you to change the MAC address, you can download this tool from the internet.