請問xanga skin d code應該放係邊度?

我係createblog搵到個skin既code, 佢果度係分3part, copy and paste to about me, copy and paste to I"d like to meet, copy and paste to heroes, 我唔知咩黎so將全部3 part 既code 放左係Website Stats 果到, 但preview果個skin零零舍舍去左bottom果度, 而ng係當background咁, 再放落JavaScript Module 都係咁...而放落xanga skin佢就叫我去upgrade a/c...係咪真係要upgrade左先用得架??如果ng係咁d code應該放係邊先ng會彈左落底?
thz~