is that a grab pack? if so....
open your main jibbing FOLDER. which has all your textures and stuff. look for a file named "cross_in6.b3d" remove that mother fucker and put it in the recycling bin, unless you want to keep it (which you should put in a separate folder). take the file in the grab pack you want also named "cross_in6.b3d" and put it in the main jibbing folder. close the folder and open the game. done.
if thats not what you are asking i will now feel like a complete idiot. oh well
miss jibbin, havent played it since i accidentally deleted my 3d graphics driver a month ago :(