VIA Arena has a very good guide to choosing the right Vista for your needs. There is a handy chart that shows you which features are in the different versions of Vista and what they mean to you. This is good reading for those of you planning to upgrade to Vista
For my needs it looks like I will need "Windows Vista Business" edition. That is the middle edition of seven (7) editions.
YES! 7 different editions of "Windows Vista".
LET THE CONFUSION BEGIN!