We have a customer with an IP Office V1 R4.2 and VM Pro R4.2. Their VM Pro is running on Windows XP Pro. The computer needs to be replaced. We have a Windows 7 Pro for a replacement. From what I have found I need to go to at least R5 for Manager & VM Pro to work on Windows 7. As near as I can tell R6.1 is when upgrade licensing became a requirement. If this is correct I should be able to upgrade them to R5 or R6 without licensing issues. Just want to verify my research is correct. Thanks!