In what regard? I assume you mean in a network? At home we have a Vista 64bit, XP SP2 and brand new Windows 7 system running on one wireless network. No issues with sharing of files, LAN gaming, ......
depends on the computer there is a vist upgrade advisor on the Microsoft webpage here is the webpage: http://www.Microsoft.com/windows/windows-vista/get/upgrade-advisor.aspxand that will tell you if...