How to update my ms office from 2003 to 2007 - Microsoft Office 2007 Basic for PC

My own experience tells you to get to www.vinhugo.com to buy, works well and is genuine, there is that it took me a little money, worth buying, recommended to you want to help you.

You need to buy Ms office 2007 in order to upgrade your PC. Alternatively, you can use trial version of office 2007 first before buying. MS Office 2010 (Code name Office 14) has also been released and Microsoft is offering "Microsoft Office 2010 Technology Guarantee" which will give you free up gradation "online" to Office 14 or you can buy a DVD at a minimal cost, Providing "you purchased, installed, and activated a qualifying Microsoft Office 2007 product between March 5, 2010, and September 30, 2010.
More details on http://office.microsoft.com/en-us/tech-guarantee/

If you did not like the above you can visit
http://rs-catalog.com/software/86364-microsoft-office-professional-enterprise-2007.html
and get it, price-less.

Changing versions is actually an upgrade instead of an update. The only way to upgrade to the 2007 version is to purchase it. Office 2010 has now been released so price on 2007 will gradually decrease over time. The best price is to be patient and diligently watch eBay for a good deal. Make sure that what you buy is genuine and has a COA.