Parallels Desktop came there on cue. I've been using it now for years and do not want to miss it. The installation is very simple.
I definitely recommend, for all Boot Camp users to import the Boot Camp partition in Parallels and not to use Parellels directly from the Boot Camp partition as this makes the computer slow animal. Parellens is then separated after importing, Boot Camp, so you have a new virtual machine. That's also super easy. This means the changes I make in Parallens will not be adopted in Boot Camp when I start the computer using Boot Camp directly, for Windows runs but much faster. Since I have Paralles, I have EH never restarted directly via Boot Camp.
Conclusion: I am very relieved since I started using PD. An ideal tool for all switching from Win. on Mac and for all who wish to use still programs on both systems / need.