How do you unsave a skin?

[Usagi]

After logging in, you just press F4, then you do /kill
After that you get to choose a skin, choose one and after that type /savechar

      Okay, here is a problem...Maybe not a common one, but a problem none the less. I have an F4 key that just doesn't want to work for some reason, is there any other way to change the skin? Iono, just checkin' - Even if it's by asking an admin, it would be nice to know.