Hey guys!
I've been searching for something similar to LolSkins and came across this one.
It's basically the same, with a different GUI..
You can download it here:
How to use?
1. Extract the files (they must be on the same folder)
2. Run New LOL Skins.exe
3. Before your game goes to summoning, you must have selected the skin you want on the program..
Remember, only you can see the skins you are using ..
Enjoy