getting auto increment id value

Hi,
    I have a table and it's only distinct value is it's auto incremented id.
I need to insert like 80.000 rows at ones so I have some time issues.
Problem is I need a way to get a return value which is id of my inserted row
since I need that id for another insert action. I think I should use a
function for this but I am not sure how I can get Id of my inserted row.
Thanks.
M. Emre Çolak