custom zips

[shadowclone69]

Im trying to add buildcraft and ic2 and others to the voltz pack using custom zips but when i do it crashes and im not sure if i have to make a coremod folder and a config folder and if i do i dont know how or what to put into those folders. however when i put them directly in the .techniclauncher they work ecept ic2 but i read somwhere that the ic2 and universal electricity conflict so with out ic2 its not a big deal.