You guys are completely wrong thinking that editing player.bmd will fix your agility/speed bug problems. Editing this file may result only visual/graphic problems and will not solve the problem permanently and could even make it worst.
The characters speed is controlled by both server and client files (.exe). To fix this issue you have couple of options : to code a library which will be hoked to the client, to have open source main.exe and do the fixes, to have an open source server files and to do the fixes or to do a library hooked to the server. The best option is to have all of those or you may not have a good result of fixing all skill and attack speed issues.
To do any of these you have to understand the reverse engineering at least in good level and to have a good programming skills.
You do not have any of those skills so just find someone to do it for you, it wont be for free unfortunately.