I wrote up something like this before regarding getting back your CS admin username and password when it's lost, but I thought it was a bit complicated and should be a little more simple. It's still super simple but writing the script out isn't always something people want to do, especially if they're foreign to SQL. So just run the following queries together against your database and it will spit out your information:
SELECT Password FROM aspnet_Membership WHERE PasswordFormat = 0 AND Email NOT LIKE '%anonymous%'
SELECT UserName FROM aspnet_Users WHERE UserId = (SELECT UserId FROM aspnet_Membership WHERE PasswordFormat = 0 AND Email NOT LIKE '%anonymous%')
