oil in radiator white smoke coming from tail pipe

I would take it in and have the intake gaskets checked- white smoke means you are burning coolant.

When was the overheat? was it a simple rubber hose replacement? was there subsequent damage? Oil in the radiator is serious moo-joo. Cracked block or cracked heads, think my associate is being optimistic with a simple intake gasket....it's the oil part...Oil and intake do not cross, intake and coolant aren't going to let oil through..tell us more about how it got to be this way~