[help] Convert .zip into .bootskin

I made my own image and ini and i placed them into a .zip file

but i don't know how convert them into a .bootskin file

I don't receive response in deviantart forum and customxp forum more

I simply renomme but it don't work

Rename the file from .zip to .bootskin.

i tried it already and it doesn't work

nobody seems to have another solution also i seek i seek