Not last time I checked. When you filled out the form for your free license it should have asked you how many CPUs you planned to use it on. Just type in "999" and it will work fine. Honestly though, I think that's just for survey purposes and that all the keys will work with multi-CPU systems, even if you entered "1". WCS on that is that you have to reregister and get a different key.
Jason Litka