Why won't my messenger work?

I have downloaded messenger 8.0 and still can't get it to work,and I don't know how to change the proxies to make it workWhy won't my messenger work?Have you tried connecting directly to the internet? To do this try to sign into messenger again. When it's trying to sign in click %26quot;Messenger%26quot; at the top to the left on the messenger window. Select preferences %26gt; connection %26gt; select connect directly to the internet click apply then OK