不知道是不这样setting>control panel>user Accounts>the name u use>change account type.
如果你是winxp,这样做就应该行了。
不过最好的办法,就是你直接用administrator login,把别的user都删了,其实大多数人都是用administrator的,这没什么不好。
use administrator login
your pc is easier to be hacked or get virus, and it's easier to crash your OS. So actually administrator account is only recommended for system maintainance.