Vista Home Basic cannot join a domain, so if you have a domain at the office you won't be able to access things as easily as you could if you ran Vista Business or Ultimate.

please you better go for the business edition if you really want to use it in your office.reason of using domain is more secure in a working settings.
i was using the home edition be4 but had to up grade to business so that i could work easily in my office. though it dependson your company policy.
BUT GO FOR BUSINESS EDITION. GOD BLESS