Query in ABAP HR

Hi folks,

i am new to ABAP HR. i want to fetch data from a infotype with some conditions. Like, to select data from PA2002 wehre pernr = pernr and begda = pdatv and endda= pdatb and subty = '0930'. Could any body help me how to fetch data by using read_infotype statement...thnks inadvance,

Ram.