skin installation help

I wanted to install a skin. Now i wanted to use a skin installer.
'you should make a backup of the ww2art.sga file located in
"your path to the game\Company of Heroes\ww2\Archives\".'
Now it seems that i don't have that. In the ww2 folder nothing is there. What should i do? Should i install the skin or leave it as it is?

;D ;D no files in ww2 folder? how you can play?  ??? you looked into my games folder or c:/programs/thq/company of heroes/ww2/archives ?

Yes, i did. Is it maybe because im not an administrator on my computer? (brothers comp)

maybe.... ask him and look as an admin in the folder...