so what is iot that i put in to photoshop the pac file? or do i save a png as a pcs after i mess with it im lost
Nononono.
You make the texture in Photoshop. Save it as a .png file.
Open the pac/pcs you are editting in BrawlBox.
Right click in the TextureData[0] on the texture you are replacing. Find it, import it, then save as a .pair to get both the pcs and pac files.