Hi there. New to Parallels here. I am running Windows XP in a virtual machine on OS X. Long time Windows user. My biggest issue when flipping back and forth between Parallels and OS X are the shortcut keys. I am completely lost as to a Mac and what the difference between Fn, Control, Option and Command are. I mean, I get that they are modifiers. But, I never know when to use which. This is compounded when going back and forth with Parallels and I try to use all the same keyboard shortcuts in Excel that I used to use. Do any of you have a suggested keyboard mapping that might help? I guess I am assuming that you can even do this with Parallels. Any suggestions are welcomed!