HaloMods "Classic" Read-only Archive

How do you make a ppf with a map bigger than the origional because of internal bitmaping??? i read the tut but i didnt understand it,lol,could som1 please give me a tut or answer my question on how to do it?
the main problem is i cant find how to change the size of the map in hex edior,plz help

you can't resize a file by just hexing ( at least ive never heard of it)
just use "sized pff" it lets you make ppfs with maps that have stuff added. do a search for it