[Bettersprint mod help.]

I've downloaded the mod from 3 different sites and none of them worked. 
One of them was from this site: http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1285563-better-sprinting-950-000-dls-use-links-on-top-for
The second one was from this site: http://minecraft-forum.net/minecraft-mods-downloads/1-5-2-better-sprinting-mod-download/#.VufT4ZwrL4k
And I forgot the third one. 

[Bettersprint mod help.]

I downloaded hexxit mod, and decided to download bettersprint mod since im so used to it. I downloaded 1.5.2 version of bettersprint mod, and dragged the zip file into the mod directory of the modpack. When I start hexxit everything loads fine, all the mods work but the bettersprint mod doesn't show up at all. Would appriciate the help, thanks.