im running windows vista and everytime i try to download a wow addon it goes through the download and even though i have the dont close this when downlaod completes box uncrossed it just closes and does a sound like congrats youve downloaded something and it doesnt do anything as wellas when icheck to see where i saved it too there's nothing there its getting really ******* frusterating and i need help

ok, let's try to help you getting help.

Step 1: buy yourself a new keyboard, where coma, dot and enter work.  even the 10$ cheap one got those feature.

Step 2: explain how you are downloading addons.  Firefox, Internet Explorer, Safari, Opera, Chrome, Curse Client?

Step 3: try to look where your browser download (try alt-J) if your using chrome or firefox.