doubts in Date format..

Hi,

i am getting the selection screen date is<b> 01-04-2007 to 30-04-2007.</b>

i am using one query in that 1st time the budat is 01-04-2007(budat = s_budat-low) next time it would be 02-04-2007 like that up to 30-04-2007, it should take.

Is there any function module to get all the date from 01-04-2007 to 30-04-2007.

please guide me.