I am setting up a new 3CX system for a church. They will have 6 extensions (Yealink Hardphones) and a VOIP provider (CallCentric) for PSTN. I have an Athlon dual-core box with 2GB of memory that I am prepping for 3CX. I have a choice between XP Pro and Vista Pro. Does any one have any thoughts as to which one would be better suited for the task? I would prefer XP for the sake of simplicity, but I really like Vista for the more modern architecture and hardware support. This will be a dedicated 3CX box.