wow, you are **** if you can't kill a normal monster as a wizard. You probably walk right up to the monster and start attacking with it right in your face! lol idiot
What you do is you go as far back as possible and start using your elements on it since you can use ranged attacks. By the time the monster gets to you you should have used 3 spells already. This normally drops a monster 3 lvls higher than you.
So, in conclusion, if you cannot kill monsters as a wizard by yourself, go to My Computer->Control Panel->Add/Remove Programs->Click on Silkroad and press "Uninstall"