I just bought a new server with Windows Small Business Server 2008 ,SP2 Standard Edition 100 Series. I will be connecting 7 client computers to the server and would like everyone to be running Office software. I want to be able to have Excel, PowerPoint, Word, and Outlook on all computers and be able to get into Outlook with mobile devices. Most importantly I want everyone to be able to view each others Outlook Calendar and make changes. What version of Office do I need to buy to accomplish this (Some type of Office Server version or just Small Business Office installed on all client computers)? Thanks for your help.