I have just ordered an MBA Ultimate. I need to run a few specific Windows applications for work. Currently I run them on my 2007 MBP with Windows XP through VMWare Fusion. I will continue to use Fusion on the MBS Which Windows program will work better on the MBA through Fusion- Window XP or 7? The Window programs that I use are legal applications along with an older version of MS Word for Windows. I will not be doing any gaming, video editing, or photo related actives on the Windows side. My goal in choosing my Windows version is to make these programs run as quickly and smoothly as possible.