Lots of people have Microsof company Office 2003 and are interested in upgrading to Microsof company Office 2007. However, there are lots of differences between the two although they are the same program with different edition years. As a result, anyone with Microsof company Office 2003 should continue reading to learn about some of the differences of Adobe Photoshop CS5 upgrade. One of the changes is the digital signature. For instance, if you are in Microsof company Office 2007 training you will learn that with this edition the digital signature is formatted with XMLDSig, which is unique of what you learned in Microsof company Office 2003 training. Also, the Microsof company office training courses will educate you on that in Adobe Photoshop Extended CS5 you will find the digital signature under File, Finalize Document, Signatures rather than in Tools, Options, Security, Digital Signatures. The digital signatures were changed to be more intuitive and safer to find. Another change you will learn about in all of your Microsof company office training programs is that the add tool for Office 2003 was removed. It was replaced by a document inspector that can run multiple times at once so that it is easer to clean up documents. In Microsof company Office 2007 there is now some versioning offered. Before in Microsof company Office 2003 you could only enable or disable versioning, but now versioning numbers are included and numbers such as 3. 3 may be used as well as whole numbers like 3. Another change that exists in microsoft office 2007 that is not the same as Microsof company Office 2003 is that Windows Protection under the law Management Client v. 1. 0 is no longer supported. A new client version of Windows Protection under the law Management Client SP1 is used in Microsof company Office 2007 and the new version is easy to install and no change is seen when the new version is installed. Yet another change that occurred is the Send for Review feature that could be found in Microsof company Office 2003 under File, Send to, Mail Beneficiary (for review). These entry points do not exist in Microsof company Office 2007. There are of course many other changes that occur in Microsof company Office 2007 that Microsof company Office 2003 users must learn and get accustomed to. However, there are not so many that users who upgrade will have too difficult of a time changing.