I have Camedia Master 4.2 which I used on Windows XP; but I need to download an update version for use with Windows Vista or obtain a CD for Vista

To learn about the new and free version of Olympus Master 2 software go to:
For Windows:
http://downloads.olympus-europa.com/OM2/win/OM211Setup.exe
For MAC:
Olympus Master 2.11: http://downloads.olympus-europa.com/OM2/Mac/OM211EN.dmg
This software replaces all previous versions of Camedia Master 4.x and Olympus Master 1.x.

To learn about the new and free version of Olympus Master 2 software go to:
For Windows:
http://downloads.olympus-europa.com/OM2/win/OM211Setup.exe
For MAC:
Olympus Master 2.11: http://downloads.olympus-europa.com/OM2/Mac/OM211EN.dmg
This software replaces all previous versions of Camedia Master 4.x and Olympus Master 1.x.

That depends - what operating system is running on your computer? If you are running Vista it is because Camedia Master is not compatible with that operating system.

To learn about the new and free version of Olympus Master 2 software go to: http://www.olympusamerica.com/cpg_section/oima_softwareMaster.asp Click on 'Free Download' to register your email address to receive an email containing a link to download either the Windows or Mac version. This software replaces all previous versions of Camedia Master 4.x and Olympus Master 1.x and is XP and Vista compatible.

To learn about the new and free version of Olympus Master 2 software go to: http://www.olympusamerica.com/cpg_section/oima_softwareMaster.asp Click on 'Free Download' to register your email address to receive an email containing a link to download either the Windows or Mac version. This software replaces all previous versions of Camedia Master 4.x and Olympus Master 1.x and is XP and Vista compatible.

To learn about the new and free version of Olympus Master 2 software go to: http://www.olympusamerica.com/cpg_section/oima_softwareMaster.asp Click on 'Free Download' to register your email address to receive an email containing a link to download either the Windows or Mac version. This software replaces all previous versions of Camedia Master 4.x and Olympus Master 1.x and is Vista compatible.

The camera is a standard connect camera and what we recommend for XP and Vista users is to look into purchasing a smartmedia card reader that connects to USB port so that you are able to transfer images using the reader as opposed to connecting camera to PC. The camera connection is not XP or Vista compliant.

Olympus Master 2 software download snippet
To learn about the new and free version of Olympus Master 2 software go to: http://www.olympusamerica.com/cpg_section/oima_softwareMaster.asp Click on 'Free Download' to register your email address to receive an email containing a link to download either the Windows or Mac version. This software replaces all previous versions of Camedia Master 2.x, 4.x, Olympus Master 1.1 and is XP and Vista compatible.

To learn about the new and free version of Olympus Master 2 software go to: http://www.olympusamerica.com/cpg_section/oima_softwareMaster.asp Click on 'Free Download' to register your email address to receive an email containing a link to download either the Windows or Mac version. This software replaces all previous versions of Camedia Master 4.x and Olympus Master 1.x and is XP and Vista compatible.

To learn about the new and free version of Olympus Master 2 software go to: http://www.olympusamerica.com/cpg_section/oima_softwareMaster.asp Click on 'Free Download' to register your email address to receive an email containing a link to download either the Windows or Mac version. This software replaces all previous versions of Camedia Master, Olympus Master 1.x and is XP and Vista compatible.

To learn about the new and free version of Olympus Master 2 software go to: http://www.olympusamerica.com/cpg_section/oima_softwareMaster.asp Click on 'Free Download' to register your email address to receive an email containing a link to download either the Windows or Mac version. This software replaces all previous versions of Camedia Master 4.x and Olympus Master 1.x and is XP and Vista compatible.

Windows compatibility with Olympus digital products is supplied below by model. This information will be updated as additional testing is
completed.
Windows Compatibility For Camedia Master Software Versions
Software Version Remarks
Camedia Master 4.3 Windows 98, 98SE, 2000, ME, and XP are fully supported with Camedia Master 4.3
Camedia Master 4.2 Windows 98, 98SE, 2000, ME, and XP are fully supported with Camedia Master 4.2
Camedia Master 4.1 Windows 98, 2000, ME, and XP are fully supported with Camedia Master 4.1
Camedia Master 4.0 Windows 98, 2000, ME, and XP are fully supported with Camedia Master 4.0.
Camedia Master 2.5
In order to use the drag and drop functionality in Windows XP you will need to download and install the Camedia Master 2.51 patch
for Windows XP compatibility located at http://www.olympusamerica.com/files/cm251_update.exe This patch will not work on any
other operating system.
Camedia Master 2.0
While you can download images using Camedia Master 2.0, you may experience incompatibilities when using the drag and drop
feature in Windows 98, 2000, ME, and XP.
Digital Vision 3.0 The Digital Vision 3.0 software is functio nal but not officially supported with Windows 98, 2000, ME, and XP.

Also, here is a link for the Camedia Master software updates
It is for Camedia Master 2.x or 4.x
Also, on the page you can download the new Olympus Master 2.0 software.

http://www.olympusamerica.com/cpg_section/cpg_downloads.asp?special=11

Hope this was helpful.
Please rate this advice. Thanks so much!