i hate to be rude, but i cannot understand what you are trying to say to the slightest degree.
the thread title indicates however that you dont know how to install a custom skin/model.
its simple, open up your esf directory.
its usually something along the lines of "C;//program files/valve/steam/steamapps/half life/esf"
open the model folder in that directory,
extract the model you want to use into the folder of the character it replaces, (for example, a model compiled for gohan WONT work for goku, so make sure you get it right)
rename the file if necessary, to whatever the folders name is.
and launch esf, done and done