This finally solves the issue of Dropbox only supporting one account per desktop. It’s a good move and makes it easier for companies to adopt Dropbox and help it continue its push to make traditional file servers redundant.
Though the engineering behind the new Dropbox for Business is apparently quite complex, the end result is simple: a new, separate Dropbox folder for your work stuff. You still log into your Dropbox account as you always would. The difference is that your IT guy has access to — and control over — the new work folder.