Safari Plugins....???

First of i want to say hello and introduce myself being this my first post...
My name is Henry.. and.. "I'm Hooked on iPhonics" ... lol

lame ... i know!


... but anyways so on one of my many adventures to the vast world of this place called Web, with ive come up on many a sites the require certain plugins like flash or wave or even quicktime, and i cant view them... is there a way to download and install these, and im sure other plugins to the iphone 3G?