Vista - Live Anywhere

Hmmmmmmm......... Well Iv been using the trial of vista rtm for the past
week and so far I really like it. I can see a great future for gaming on
vista and I suppose I only have a few questions I would like answerd. Live
anywhere being the but of. Well question number one. When will we see the
effects of live anywhere in vista? Question number two. Will we be playing
games for windows games through the multiplayer live network just like the
360. I know you can play shadow run agains your friend on the 360 but what I
mean is will you be able to play pc only game titles over the network. Which
leads me to the next question. If the last question turns out to be yes then
does this mean that players have gamertags irrelevant of wether they have a
360 or getting one. So one could access a version of live arcade ect from
the games explorer. so one could unlock achievements ect and have their
gamertag show this. I guess I wanna know wether these live features will be
the offspring of the 360's live features or if they will be independant of
the 360, yet interconnected. Thanks for taking the time to read my little
dilema