Ohk guys, I need help.

I recently bought GTA4 for PC.
I have installed it and everything, even created accounts with all the random things it wanted.
BUT.
When I start up the game, it says I need to login to Windows LIVE, or else I won't be able to save the game. I do that, then it says that there is an update for the game, and if I do not install it, I get logged out. I still can't play the game.
When I install the update, I get near to the end or the progress bar, and then it just stops. I wait for 15minutes after that, and still nothing.
I hope someone can help me get this game running.

BTW, I have never actually gotten INTO the game. If I choose to not login, I just keep getting pictures of people within the game. This doesn't stop unless I bring up task manager, and end the process.

PLEASE HELP.

I thought I would post this here so I can get some people to look at it, and help me out.