Microsoft's new Office 2007 suite comes in a large number of guises. Confused? Don't worry. We'll explain the various combinations of apps, and help you find the right one for you.

The cheapest retail suite is the Home and Student 2007 edition (£99), which includes Word, Excel, PowerPoint, and the OneNote note-taking application. Next up is the £330 Office Standard 2007 edition reviewed here; it substitutes Outlook for OneNote.

The Small Business 2007 edition (£380) swaps OneNote in favour of the Publisher desktop-publishing tool, and adds Outlook with Business Contact Manager. The £280 Professional edition adds the Access database program to the Small Business lineup, and the Office Ultimate edition (£575) introduces a whole slew of other business-focused titles such as the Groove 2007 collaboration application.

There are also three versions not for retail sale: Basic 2007 (with just Word, Excel and Outlook) will ship on new PCs; Professional Plus and Enterprise 2007 will be available only to big businesses. If you currently use practically any recent Office program or Works suite there are substantial upgrade discounts available.