I have been able to use the Live Meeting, but when I open the Application Sharing module (to share Excel 2003 or 2007), the 'beach ball' spins and all the computer stops to respond eventually. Any information will be greatly appreciated. Technical information about my set-up below. Thanks SO much. Type of Mac: MacBook Pro Core 2 Duo Guest Operating Systems: Windows XP Professional Your Mac total amount of memory: 2 GB. Amount of memory you specify for guest OS: 256MB.