How can I upgrade my microsoft office from 2002 to the version 2007.

You should be upgrading to 2010 or 2013.
Office 2007 mainstream support ended last year, so no more Service Packs.

The answer to your question depends on how you installed Office 2010.

During the install, if you chose the options to keep all previous versions, then the 2010 install will be seperate from the 2007 install. However - if you chose "Upgrade", then the 2007 versions are changed to the 2010 versions and you will not be able to run 2007 anymore. This is because the upgrade overwrites the previous versions.

If you purchase the Upgrade version of Office 2007, the upgraded version will install over your older version. Microsoft made it a lot easier for customers to upgrade.
Good luck!

Before Microsoft Office 2010 was released, you could have purchased Microsoft Office 2007 "Upgrade", at a lower price than if you purchased the "full" version of Microsoft Office 2007.

You might still be able to find a copy of that software, in some computer-stores,
or maybe online at eBay.

Otherwise, purchase the "upgrade" version of Microsoft Office 2010.

Now that Office 2010 is available at retail stores, it may be difficult to find the "Office 2007 Upgrade" package at any retail computer-store. If you can find it, purchase it (it will cost less than a "full" version of Office 2007), and just install it.

The upgrade version is only to upgrade a previous version of MS office. The trial version does not qualify as previous version to be upgraded. You need to purchase the full product rather than the upgrade.

If you know somebody who has MS office 2003 with a valid product key, you could install that version, and then upgrade it with the product that you purchased

Yes it works on both XP and Vista and is a cool office suite

kind regards and please don't forget to rate us

Administrative Rights needed for the installation.

Means that you need to log-in as an Administrator or your User Account must have such rights

I bought an upgrade version and it doesn't work. What should I do?
First, please confirm you meet the qualifying criteria for an upgrade purchase. To qualify for an upgrade you must have a valid license for one of the following products: Office Standard Microsoft® Works 6.0-10; Works Suite 2000 –2007; Any Office 2000-2007 (any program or suite), Office XP (any suite) Office Small Business Microsoft® Works 6.0-10; Works Suite 2000 –2007; Any Microsoft Office 2000-2007 (any program or suite), Microsoft OfficeXP (any suite) Office Professional Microsoft® Works 6.0-10; Works Suite 2000 –2007; Any Microsoft Office 2000-2007 (any program or suite), Microsoft Office XP (any suite) Project Professional Microsoft® Office Project Professional 2000-2003; Project Standard 2000-2007 Visio Professional Microsoft® Office Visio® Professional 2000-2003; Microsoft Office Visio Standard 2000-2007 Visio Standard Microsoft® Office Visio® Standard 2000-2003; Microsoft® Office Visio® Professional 2000-2003 Live Groove Microsoft® Office Live Groove® 2003; Microsoft Works 6.0-10; Works Suite 2000 – 2007; Microsoft Office 2000–2007 (any suite), Microsoft Office XP (any suite) Publisher Microsoft® Office Publisher 2000-2003; Microsoft Publisher Deluxe 2000; Microsoft Publisher with Digital Imaging 2003; Microsoft Works 6.0-10; Works Suite 2000 – 2007; Microsoft Office 2000–2007 (any suite), Microsoft Office XP (any suite) Small Business Accounting/Office Accounting Professional Microsoft® Office Small Business Accounting®2006; Microsoft Works 6.0-10; Works Suite 2000 – 2007; Microsoft Office 2000–2007 (any suite), Microsoft Office XP (any suite)
Found here:
http://us20.trymicrosoftoffice.com/faq.aspx?culture=en-US

This link can help you:

http://www.directionsonmicrosoft.com/sample/DOMIS/update/2007/01jan/0107nffio2.htm