I have a new IMAC INTEL core 2 duo with the latest version of Parallels 5 installed with update. I bought a Window 7 Home Premium at the local Micron store that was a full version "new OEM system builder pack" in the 32 bit version. Installation goes well until it tries to start up Windows and I get the following error message: "The unattended answer file contains an invalid product key. Either remove the invalid key or provide a valid product key in the unattended answer file to proceed with windows installation." I've repeatedly put in the key from the label in the box, but the same problem occurs. What do I do? Is it bad software? Does the fact that they sold me a new "OEM system builder pack" a problem? Any ideas? Thanks!