Based on Microsoft's Retail Software License Terms (select Windows Vista, Ultimate and your language) you can install only Vista Ultimate to a virtual machine.
But, does that mean that you can install Vista Ultimate on a Mac under VMWare Fusion (say) and use the same license to run Vista Ultimate on a PC? Also, can you use 32 bit version on one and 64 bit version another?
But, does that mean that you can install Vista Ultimate on a Mac under VMWare Fusion (say) and use the same license to run Vista Ultimate on a PC? Also, can you use 32 bit version on one and 64 bit version another?