I am sorry to be a bother, but I am planning to buy a mac and was considering this software. I am confused about why there are 2 versions of Parallels and the difference between the features and benefits that each offers respectively (http://www.amazon.com/Parallels-Des...VQ8M/ref=sr_1_1?ie=UTF8&qid=1308263734&sr=8-1) and (http://www.amazon.com/Parallels-Des...VQAA/ref=sr_1_2?ie=UTF8&qid=1308263734&sr=8-2). If I buy the one for $50, can I still have the option of running both OS's simultaneously or integrated? Also, is a cable provided to do the PC to Mac transfer or can a regular portable hd be used? Can you install windows programs on the mac once Parallel 6 is installed and if so, does it have to be that Windows is open and it has to be in the windows OS? Is this software also compatible with OS Lion that is coming out in a few weeks? Thanks