Flushing Coolant

I'm flushing the coolant this weekend on my Fiero GT V6. Any words of wisdom on this? I know that the Fiero has a "special" way of doing this since it is a midengine car. How fragile is the car to the procedure?

I would rather only drain the fluid through the radiator rather than opening the drains in the coolant tubes (heard horror stories about opening those).