My mom has been using a 2009 Mac Mini and loving it since moving from Windows 3 years ago - from Snow Leopard and now Lion she is very comfortable using OS X. She has to change to a new accounting package for work, and unfortunately it is Windows only. She cannot use bootcamp as she'll be moving back and forth between mac/windows throughout the day, often using software from both OS's concurrently. Before I go and purchase a copy of Win7/parallels I would like your advise/comments please: 1. Is her current 2009 C2D 2.0Ghz Mac Mini with 3GB RAM and 320GB Hdd sufficient to run Win7 smoothly in parallels? 2. Would upgrading to 4GB RAM make a big difference? 3. Would it be a better idea to sell her current system and upgrade to the new core i5 Mac Mini? Obviously the new system would be much faster running Win7 in parallels... From anyone with a C2D Mini, is her current machine is quite capable too? Just don't want a slow laggy system. Any advise is much appreciated. Thanks!