Once you are logged in, you can edit yourself and make yourself an Admin by going to the Members page and then clicking on the that is on the same line as you are. There is a dropdown box on the lower right hand side to choose the member level.
Also, you can change the Admin password by clicking on the Profile link at the top right of your forum.
Another question, about security of Snitz. Is there any risks for any members to have their password stolen by hackers? I'm not talking about scaming people to get passwords (or other kinds of request), I mean it by the hard way?
Since you are using Brinkster and the DB directory is accessible by anyone, you should name your database something like you would name a password.
right now I can download your database because I know the name of it. Use a combination of letters and numbers and don't forget to change the name in config.asp also to the same name.