Choose a folder. rar (there are 3 in the download)
Extract it on any place
Put the files in the paste 'Mark'. : C: \ Program files \ Z8Games \ CrossFire \ rez \ UI \ Mark
And have to replace.
NOTE: Make up the original files.
I'm glad to be useful
Mark(1) is a Backup file for your killmarks, whenever you would like to get rid of the kill marks, copy and paste the files in the mark(1) folder and paste them in your UI/Mark folder.