Vista - Vista activation

My husband and I both have a computer and share an internet connection.We
just bought vista ultimate and it only let us activate one computer.Now I
know XP let us activate both since we were in the same household.Is it
different with Vista.If so why do they sell a version of Ultimate that is
half the money we paid ,For a one time activation?

Hi Shelly,

With Vista you can only have the product key number installed and activated on one computer at a time.

You use the same product key number for either the 32 bit or 64 bit version of your Vista, but you still can only have it installed on one computer at a time. You can also install your Vista version with it's product key number from any Vista Express or Retail installation DVD. The only difference, of course, is that the 32 bit and 64 bit versions have separate DVD's.

Hope this helps,
Shawn