what u do is wait i reckon. i think it's normal, happened to me (im doing civil). on that page where it says it is full there's a heading called 'description' and under it it gives you the reason why: "Students will be allocated to classes in week 1."
i think i read somewhere that you won't be allowed to join a class until you do the english test thing (the one that determines whether or not your english is good enough for your course)
