If you own that license you can get more activations by calling it in. No one but MSFT will issue this.
I have the family pack and did not need an os to install from the pack. The issue of 32 to 64 bit is well discussed so I won't cover that here.
I have been trying to clarfy the requirements to upgrade to W7 from XP but the normal responses are swamped by discussions about OEM upgrades. I understand that I am not entitled to use an OEM OS.
I have had a rolling upgrade of my computer for some years now and have now run out of re-activations on my XP licence. I have enough leftover bits to make two other computers for the children so think a Family Pack option is logical.
What I need help with understanding is;
Can I use a W7 Family Pack (FP) upgrade (VUP I think its called) over an XP installation or are W7 upgrades only for use over lesser versions of W7? Also, does the requirement to do a clean install over XP mean I actually need a retail version for upgrade?
If I can use the W7 FP upgrade over XP are the extra two licences usable on children's computers or can I only use one of the licences over the current XP install?
Hoping for clarification