How to learn what version of Windows you have
Rightclick My Computer or Computer on the Windows desktop and choose Properties from the popup menu.
Click the General tab of the System Properties dialog box that appears.
Under System, you'll find the Windows version (common name, version.build number) and any service packs that have been applied.
How to learn what version of PowerPoint you have
Start PowerPoint
Choose Help, About Microsoft PowerPoint
The Help About dialog will tell you what version (and Build number) of PowerPoint you have.
The Build number can help determine whether a particular service pack has been applied, but it's not 100% reliable.
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