Installing any software can be controlled by the AD Group Policy ... the domain account that you are using won't let you do any of those ... Yahoo mail web client is blocked through Smart Filter I guess ... as all what he had to do is blocking the URL itself, adding it to the not-trusted websites or Block List and that is it ...

 

Did you try www.meebo.com? I guess that if he is smart enough, he will block all as it has all chat clients there ... this is the first website that i will normally block after blocking any torrent clients, torrents websites and other messengers Wink

 

------------------------------------ Do not dwell in the past, do not dream of the future, concentrate the mind on the present moment. (Gautama Buddha)