So am I correct to say the steps to flush your coolant system are as follows...I have never done this to a vehicle (kind of a "flushing your system for dummies"):

1.) loosen petcock (location unknown) and drain
2.) loosen engine block plugs (details unknown...remove alternator??)
3.) rinse using distilled water (should this be done w/ engine running?? closed or open petcock?? how long??)
4.) after rinse, fill w/ 50/50 mix

Sounds pretty easy? Did I miss anything?

Thanks for any assistance.