<A target="_blank" href="http://socialaboration.blogspot.com/2010/10/sametime-advanced-801-on-windows-64bit.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Socialaboration+%28Socialaboration%29">David Greenstein has posted information on using Sametime Advanced </A>in Windows 2003 64-bit and Windows 2008 environments to help you out.