AnalogX AnonyMac

This should work in most cases, but if it doesnt then rebooting will pretty much always work - unless for some reason your network card doesnt support changing the NIC, but this is not very common.The actual MAC address can be entered just about any way you like, for example, lets say you have the MAC 1,2,3,4,5,6 - this could be written any one of the following ways:
010203040506
01:02:03:04:05:06
01-02-03-04-05-06
or even:
1.2.3.4.5.6The last one with the periods is a bit special, since its not actually in hex, its in decimal (a bit like an IP address) - if you need that format, youre in luck, if you dont, then it doesnt matter. If you would like to remove the modified MAC address, simply erase the MAC address from the edit box, and then press Apply - you will be notified that the software MAC address was removed and the connection will return to its default once it has restarted.  Alternatively you can just hit the big Restore original MAC button, whichever way you prefer.The ARP viewer gives you the ability to view the Windows ARP table, where it stores information about other computers it has connected to.  In general this is only every going to have computers on your local network, although is some rare instances others might appear.  You can right-click on a MAC and copy it to the clipboard for easy reference later on as well.The manufacturer list is actually provided by the IEEE, and is stored in a file (in the same directory as the executable) call oui.txt.  The one that is provided in the installer has all the manufacturers, but Ive stripped out much of the unused information.