You're probably better off buying Vice City and playing that, it won't be a while until MTA Blue is out. They are already on the 4th semi-public beta, and the game still hasn't been released, so it's probably going to be a while yet
Who said there's a forefeit? And I'm only being realistic, they're not even on public beta stage yet according to littlewhitey, so it probably isn't going to be this week.
1) The Vice City folder is read only. You can change that by right clicking on it and unchecking the "Read Only" box.
2) If you install a mod over Vice City, you will not be able to play MTA since it does not function alongside 3rd party mods. You need a clean install of Vice City to be able to play MTA.