Aight here it is... Grabpacks works this way:
The file is named cross_ something.. Just drag it into your main jibbin folder under program files or wherever you have it, and replace the current file with the same name. Thats it.
Same way for clothing. The jacket torso is called ghettojacket.png or jpg or some other img format.
rightarm.png and so on. I think pants are called ghettopant or ghettopants.png
its really simple, but i dont feel like getting very much into, so if you dont get it, go to jibbins forum and find out, its really simple.
In this pack i have already an armada hoodie that you can use if you want.
Also the tom wallisch pack comes with outfit and everything, so you can just open the tom wallisch file > drag everything into your main jibbin folder and replace the current files with the same names. Sorry for a messy post, but i just wrote what i came up with off of the top of my mind.
Download from here
hope you enjoy your Jibbin game more now. Much better than any other ski game in my opinion.