Since Yahoo Messenger is one of the top instant messaging clients on the web, the Sunnyvale company Yahoo is continuously focused on it, looking to improve it with new features and functions. If you’re a Windows Vista user, you’re probably waiting for the special version of Yahoo Messenger which is expected to be 100 percent compatible with this operating system. In fact, Yahoo Messenger 8.1 is already able to work on Vista but the Yahoo folks said the new instant messaging client will come with stunning functions especially designed for the new Microsoft OS. The Yahoo Messenger for Windows Vista shows a boring ‘Coming Soon!’ message which might disappoint most of the users expecting the product.