This is my first Mac OS release since I transitioned over to Mac. So I'm kinda new with all this. So with that said, Will 10.6 have an "upgrade" option, or do I have to do a fresh install? And If I have to do a fresh install, can I just plop everything over from my Time Capsule to SL? And will most software that ran on Leopard run on Snow Leopard? Thanks. FYI I pre-ordered the $29 up to date SL.