hr infotype requirement

hi all,

I have a requirement to find out to produce a report for different wage types for an employee during a month.

it works as follows.

input is profit center.

I have to find out the releated cost centers.

then i need to go to table PA0001 and find out the employees releated to that cost centers.

doubt no 1 is that do i need to provide the endda and begda as the first and last date of month. I mean i want to knw what info does PA0001 store and how does the begda and endde come into action.

help me understand that what does an entry mean in PA0001 table.

thanks and regards in advance,

Reena