mainly the motherboard type, i.e. micro atx, atx, btx...etc. and you wana make suer that the case has enough drive bays and pci bays (dono what it's called =\)
no, that would be the processor, the motherboard is what everything is plugged into.
i'm pretty sure yours would be a normal atx motherboard, so 99% of cases will work
just make sure u mount the mobo with the rubber spacers
dont think you can.... take a pic of the inside, a closeup of the mobo, showing the whole thing would be ideal.... it might not be a standard ATX and not fit in a new case
as far as i can see.. its normal ATX format. so if you get a ATX case, you should be fine
however.. you might not be able to put the Air duct back in. ( or you drill the holes for it in the new case.)
well.. you can choose wichever case you like. as long as it supports the ATX size.
but to be shure you've got a ATX sized mobo. what brand/name is it?
and why you actually want to swich the case?