[Wine] error when installing

[lovelaceb]

Hello everyone! I'm a newbie with ubuntu. But I'm already enjoying the experience. I want to try some windows games on ubuntu so I read about Wine and decided to try it out. During the install process, I get the following error when I click reload.  


W: GPG error: http://ppa.launchpad.net intrepid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8B9FBE5158B3AFA9


I have the key authenticated and the wineHQ on as a third party site. I'm not sure if I'm doing something wrong. Any help would be great! Thanks!