Root Flashing 2.2

So I, like tons of you out there am completely enamored with my fascinate. I'm pretty new to all the androids but I successfully flashed with a one click method but haven't done anything except delete a lot of bloatware. I'm curious if someone could explain Odin and how to use it as well as how to flash 2.2 onto it because I'm so very excited. I would just wait till the 22nd but who knows if that will actually happen and I'm not sure if it will work with me missing a lot of the bloatware. Any help is appreciated, you guys are awesome!

 

thanks a bunch, read it all and now am running super clean with froyo and very happy.