Torrenting the game is illegal, unless you also own a legal copy. You can also go through 'Download Game Clients' under 'Games & Codes' to save some clicks. Or to skip the disk check, manually patch Warcraft 3 to the latest version.
Return to the Summary page if you are not automatically taken there.Repeat steps 2 and 3 with your TFT key too.Type in your RoC cd key, then click 'Redeem Code'.
Link: /account/management/claim-code.html
