I am using an iBook that I recently purchased in June. However, I am starting to do some work for this web development company and the software I need to access online is for PCs only! So, I originally thought I needed to go out and buy a PC, but someone recommended the VPC. Is this a good idea for me? When I am working in my mac, do I just easily switch over to the VPC and run the one part of the application I need? Or can you only work in one system at a time? If someone would take the time to explain how it works, I would be very grateful! Also, what version? 2000, XP, etc.? I currently have only 512MB of RAM on my iBook. Thanks!!!