No old skins here, but wine has been updated. You can check out the updates and download the latest version at this site.
Wine is an application that provides APIs and interfaces for Windows applications. This means that you can run your Linux, Mac OS X or some other non-Windows platforms, and as long as Wine is running you will be able to run your favorite Windows applications.
By comparison, Parallels and VMWare create arenas in which the Windows or Linux (or other) platforms run as viable environments. Within that Windows environment the Windows applications can run natively just as if you were running only Windows on your computer.
Wine’s general information page provides background information and explains how it works.