Once you are looking at the memory of Modern Warfare hold down CTRL and press R and search for whatever clan tag you have in your regiments and replace it with the same ammount of buttons/text that is seen below, click replace all then CTRL + S. To modify your own clan tag join/make a regiment with the amount of characters you want your tag to be, go into 'HxD' and click 'Tools' then 'Open Main Memory' and select 'Modern Warfare' Once installed open up 'Modern Warfare' and 'HxD 64 Bit'