Why can't I download certain things like games or Java?

Hi, I have been downloading games from MSN Games and Big Fish Games for a year now with no problem but now they don't want to download and I checked and I do have Java but it said it needed updated so I tried to update it and it quit and said download failed; also I have Adobe Flash but I thought I would update it also and it also quit downloading and said Unable to load a GUI. So, now I can't download games or Flash or Java and who knows what else. I ran a sfc/scannow and it said that they found corrupt files but was unable to fix some and said something about CBS file. I don't know if that has anything to do with me not being able to download anything or not. I have Vista and IE7 if that helps any. Could anyone help me out with this, I'd really appreciate it because I don't have the money to pay someone to fix it. Thanks!