Sony Vegas Pro 9.0 render problem.

Hi i got a render as problem.

when i want to save my movie it take about 60GB.

and i dont now why it take so much space.

i want to be in 720+480 and when i make it smaller it still have in 60GB space.

what should i do?=

please help me.

your in the worng section mate

ok.
but do u know how i do it?