AB on MAC Bootcamp+VM Fusion

[Spellscape]

I'd like to consider purchase of Army Builder but would like to know how you see for example installing it on Apple MAC using for example Bootcamp (VISTA native mode) and than using this Partition in Virtualization software like VM Fusion or Parallels Desktop.
Both can use Bootcamp partition but require VISTA activation for it after installing VM drivers. So as I understand your product may identify work in Vista native mode (bootcamp) and VM mode (VM software) as different PCs but in real world this is same MAC/PC.
I'd like to install it also on my WIN XP PC (as 2nd license) so here is problem - I can't understand how many activations I'll need.