You can't upgrade if you don't have a qualifying product.
From
http://www.microsoft.com/office/Powerpoint/howtobuy/default.mspx
Upgrade Eligibility
Determine whether your current version of Microsoft PowerPoint qualifies you
for the $109 US upgrade price. The following products qualify:
..Microsoft PowerPoint
PowerPoint version 2002, PowerPoint 2000, PowerPoint 97
..Microsoft Office XP
Office XP Developer, Office XP Professional Special Edition, Office XP
Professional, Office XP Small Business Edition, Office XP Standard
..Microsoft Office 2000
Office 2000 Developer, Office 2000 Premium, Office 2000 Professional, Office
2000 Small Business Edition, Office 2000 Standard
..Microsoft Office 97
Office 97 Professional, Office 97 Small Business Edition (version 2), Office
97 Small Business Edition (version 1), Office 97 Standard
..Microsoft Works
Works 6.0, 7.0 or 8.0
Works Suite 2000, 2001, 2002, 2003, 2004, 2005, or 2006
Since all you've said is that you haveOffice 2003, you cannot use the
upgrade, you need the full version. Microsoft is charging $229. Amazon.com
is asking $194.99 and offering free shipping.
--
JoAnn Paules
MVP Microsoft [Publisher]
~~~~~
How to ask a question
http://support.microsoft.com/KB/555375