oh by the way, if anyone knows of how to prevent this in the future please let me know.
and thank u for the help!
fyi – i am using version 2.6 of wordpress
there is another post on the forum here http://wordpress.org/support/topic/228235 that helped me.
i found the same thing tonight and then found this long encrypted line in the header.php file in the theme folder. I backed up the original file and took out this whole line. Then I went into the admin panel deleted the casino online link and it stayed deleted.
i also changed the admin pass and made sure the wp-content folder was 0755 perms.
that worked for now.