The next beta 9 version that is available now to run on Vista does not include Yahoo Messenger Games at all!

So, since my brother likes to play chess with me via his Yahoo Messenger 8.1 version, I must use the same while running Vista Ultimate. In order to actually play chess with him I must first turn UAC (User Account Control) off. Do so via CONTROL PANEL\USER ACCOUNTS. This will involve a reboot of the computer. One must leave it off if one wants to play games through Yahoo Messenger.