Ok, so you have to delete every single folder in your Combat Arms folder that ends with .dll and copy paste the .dll you just downloaded into the folder. Make sure every file you deleted is off your computer completely, or the folders will interrupt with one another and the hacks won't work. Hope this helped. If you need tips for Rez. modding don't hesitate to leave me a private message. (I'm very experienced in the field of Combat Arms hacking).
-just kidding (wrong section btw)-