list of step to make Jigsaw Skin in img tool 2.0.
step 1=click find
step 2=find gta3.img
step 3=click it then edit find sweet.dff and sweet.txd
step 4=delete the both of the file then replace with the Jigsaw Skin
step 5=click commands then click rebuild archive(for me i dont use rebuid archive or the skin will not work)
step 6=Enjoy
Backup first before using this step it maybe crash or you want to go back in normal
ENJOY !!!:)!!!:)