Wizards are one of the most dull and one-dimensional characters in the game. They become OK soloers once they can quad kite (around level 30; can check the wiki to see when you get the relevant spells) and are never all that amazing in a group. Before they can quad kite, they are pretty awful soloers. In raids, wizards are useful, although even then, their DPS against bosses comes with a lot of caveats (it can be hard or impossible to manage aggro, and resists, even using lures, can be an issue; rogues often outdo wizards here, which is funny because wizards are supposedly specialists in taking out raid bosses). I'd say reroll a different class unless you're really committed to a wizard.
This guide has some good info on what the different classes are and how to choose which one is right for you:
http://wiki.project1999.com/Players:Newbie