Replacing the thermostat

Can someone tell me how to change the thermostat on the G20? It seems simple so I just want to avoid any pitfalls that others may have experienced so that this doesn't become a nightmare.

Since there's no Haynes or Chilton's manual for this car, I thought Id ask here

Unbolt the housing, swap, re bolt, fill the radiator SLOWLY & I MEAN SLOWLY ...... that way no air locks & no problems :)

Thanks!