I am a long-time Mac user who just got my first Intel Mac--a MacBook Air. I want to run some windows apps on my MBA, and bought Fusion to do the job. I have a copy of Windows XP that used to be installed on an old Dell laptop that we recently donated to charity. Here are my needs and concerns: -My MBA is the SSD version, so disk space is a concern. -I want to run perhaps 6 Windows apps. Some are shareware, but I also want to run Excel and Explorer. -I would like to run these on my MBA rather than an external HD. (Perhaps I could do two virtual spaces--one on the MBA and one on the HD?) Questions: How large do I need to make my Fusion space in order to run these sorts of apps? Is it a simple matter to install Windows XP? I'm thinking I'm going to have to call MS about it. What kind of performance can I expect out of this setup? Anything else I should be aware of? Thanks for your help!