I have no idea why this has just changed for me.. but before I had to put my product key with the installation but now I have to login to my Live account and then put the product key into a box for Windows Live.. this is extremely strange I have conacted both Windows Live and Rockstar Games but they both dont know what the hell is happening?? why is this happening? please tell me because I am getting really angry at my PC a lot of my stuff isn't installing or working properly.. I am beginging to think I should just throw this PC out the window.. I have just recently reinstalled Windows..
Thanks for the help