Do you see in under /admin.php?target=addons_list_installed&substring=c ustom%20skin ?
If not, please check if there is the classes/XLite/Module/XC/CustomSkin/Main.php file.
also re-deploy your store via the admin area of your X-Cart, this is very important, after I re-deploy
www.cheapeyeglasses.net, I got what I need.