Wine is a really nice application extremely useful
Steam is a very wanted one too
But Elive, also includes by default in the new versions PlayOnLinux, if im not wrong it is a frontend-gui that will help in the process to install any kind of Windows application, with own tweaks and features to make them working
You can found it on the Accesories -> Emulators menu
Question is, how much useful is to have it? it works? it helps? its useful?...
A betatester with enough free time and a good internet speed is required to try it , all the tests can be done in Live mode in order to keep his system clean!