Ah, then yes you will need Yuri's Revenge installed to play the RA2 mode & Yuri's Revenge online CnCNet. There is an alternative server to play "RA2" while you wait for your disk though - http://xwis.net
When your CD has arrived (or someone else can assist with your original question) you'll be able to play online CnCNet.
didnt work by the way. still need to run game and i dont have my disk