Um, first try just editing your original post rather than double posting.
And.. I'm sorry, you know how to move files, right? I don't know how you can possibly be using the internet and half-life without know how to move files. Just open 'Players' in one folder and your download in another. And 'drag' the file into Players.
mhm be sure you unrared the files cos all our files are rar files. then u have to replace the models ( if the models you downloaded doesnt have the same name as the models in your players/goku folder ( just as an example ) then u have to rename your downloaded model to goku.mdl and copy the file into your goku folder ( esf/models/players/goku/ )