I've tried the Windows version for a few days and I'm very impressed with the performance. I plan to buy it to replace VPC2004. I just have a few questions and hope I can get answer from someone more experienced here: 1. I use a dual core laptop as my main computer, so HD space is always an issue for me. If I save virtual HD into compressed NTFS partition, will it affect performance? Does anyone have any rough figure? 2. I've had many VPC HD image, which took me a lot of time to create. I noticed the FAQs mention image conversion using Ghost or True Image. Have anyone done any test on that? Which software do you recommend? 3. I plan to buy a MacBook Pro later this year and will use the Mac version then. Does it use the same virtual HD format as on PC?