I only have 386K.
1.I am curious if anyone knows what size the game is as i don't want to wait for it to arrive in the mail.
I want to estimate how many days/hours it will take to download.
Beta 4 is 1.67GB according to Impulse. That's installed size, I believe the download size is a bit smaller. Release game will probably be larger, but I can't imagine it growing tremendously. I'd be surprised if it's over 2GB (but that's a guess).
1A. Is this like a torrent where i can start and stop the download, or does it all have to be done in one shot?
Pretty sure you can pause downloads on Impulse.
2.I have never downloaded a game from stardock. Can i save the whole game so that if i reinstall windows, i can install the game again? Or is it like steam where you have to download it all again? (though you can back up steam)
Couple options here. You can use the "Archive" option in Impulse once it's downloaded to make an archive, and stick that on a DVD/external hard drive/whatever. Any patches you had installed when you made the archive are included, so you'd only need patches from after that date. You can reinstall from that.
You can also use Impulse Anywhere to download a version meant for offline installation.
I would just buy it locally, but i doubt that they will have it until weeks later. They still don't have entrenchment or trinity. (entrenchment was a download only before trinity as best i can tell)
It was. If you already have Sins itself, you can just grab Entrenchment and Diplomacy instead of Trinity (which is all three combined).
3. What stores are supposed to carry this game? I have Walmart, Target & Hastings.
I don't have best buy,game stop etc.
I don't know, but with the importance Brad places on Walmart as a retailer, I'd expect they will try to get it in there. Amazon.com is also carrying it, and they have free delivery for more expensive orders like this.