Like RichMSN, I switch from a Windows machine to an for work. For work software (and to VPN in to the work network) I also am using a VM--I used to use Fusion, but have switched to Parallels...both are fine. I use MS office on the Mac side for all of my documents, spreadsheets and powerpoint files. But I use Windows MS outlook for my mail and calendar. The trickiest thing for me was to get print drivers and network authentication fully functional for work printers.