Scott Ritchie submitted this to wine-patches today. Will be on the main site soon: Open the Software Sources menu by going to System->Administration->Software Sources. Then select the Third Party Software tab and click Add. Then, copy and paste one of the lines below depending on which version you are running. For Ubuntu Karmic (9.10): ppa:ubuntu-wine/ppa So it seems like all you have to do is add ppa:ubuntu-wine/ppa to the sources list. No keys needed.
