I can't download Yahoo toolbar or anything please help me?

My computer will not let me download anything. It says the security will not let it, (do not understand) did not change anything in settings, and was downloading things before help

I am trying to download the lates itunes on my computer, but my computer won't let me. It says I need Windows XP, but I have that already. I think it's because my computer is quite old and has a celeron processor. I also didn't have it connected to the internet for about a year last year, so I...

My computer is being wonky. Ok, so I'm not really good a computers... but, I cannot download anything at all! I try to download, and it gives me the option of "save" or "run" (usually) and I usually click run. It downloads, really fast, but then the box goes away and nothing happens. I use Windows...

Can someone help me stop limewire setup dialog from popping up on my computer, it always pop up while I am in the middle of something