The multi-story doors and windows?

yes

You probably need to build the second story first. But I haven't played in ages so I actually have no idea.

You are right Piapiabee. Build the second story and make sure the wall you are putting the door on is big enough to fit it.

but do I need a some kind of expansion pack?

I think it's the University expansion pack that comes with the double story doors.

u need to put a second floor

you have to add a second floor and make sure the floor isn't in the way of the window

You know you can do a lot with the 'moveobjects on' cheat.

Oh,I think the huge door n windows must be put in at least two-floor-house lol:p