I just want to make sure this is legal... ive heard great things but when i was reading through it i noticed that there were some.. questionable traits http://www.minecraftdl.com/cjb-mods/
There are some cheats on this that are illegal such as [x-ray], but you can disable them, or when your putting it into your mods folder you will see a file that says x-ray, just do not put that file in there. I use cjb for my fly because it is awesome, and it also gives you a mini-map! If you have fly this is what I would recommend to use, but seeing you don't have fly, it is still good for the mini-map.
Basically, all the mods that give you great advantages over others aren't allowed. Any of these mods in the mod pack you think do so, please refrain from using such mods. Others, such as mini map and fly if you donate for it, are totally fine.
CJB's mod is fully supported by the sever - this means even with xray installed it wont cause any problems as the sever allows CJBs mod to be used and disables the ability to use Xray. Free feel to install CJB with all cheats there, but know that they wont work with ECC
To get cjb you will need to get cjb mod pack, modloader, and mcpatcher. 1: Open mcpatcher, and patch minecraft. 2: Find your minecraft folder by doing %appdata% in the search. 3: Fined your minecraft.jar file in the bin folder. 4: Put the modloader files in the minecraft.jar file. 5: Open cjb 6: Fined the folder that says put in minecraft.jar folder, and put them in the minecraft.jar file. 7: Then in the cjb folder Find the one that says minecraft folder. 8: Put the mods folder in your minecraft folder. 9: Open your recources -> new sound, there should be a cjb new sound to put in that file. 10: Play Minecraft. I am sorry if this is hard to understand or not 100% right, I play on a Mac. This should be correct, but if this doesn't work then right another reply. hope this helps. --Edit Don't forget to back up minecraft!!