* Download the 32-bit Windows XP v8.4.8 for the QuickCam Chat V-UAP14 from here:
Support + Downloads: QuickCam Chat - Logitech
* The file was named qc848enu.exe. Right-click it and choose Properties.
* Select the Compatibility Tab.
* Select the checkbox in the "Compatibility mode" fieldset for "Run this program in compatibility mode for:"
* Also select Windows XP (Service Pack 3) from the dropdown list in the "Compatibility mode" fieldset.
* Select the "OK" button.
* Execute qc848enu.exe and do the complete installation. (It will want to reboot; go ahead and let it.)
* When it comes back up it will tell you to connect the camera. It won't work at this point.
* I went to Programs and Features and saw two entries: some Logitech software and Logitech Camera Driver. Uninstall the Logitech software but leave the Logitech Camera Driver.
* Download the Windows 7 x64 driver from Logitech for QuickCam Express:
Support + Downloads: QuickCam Express - Logitech
* The file was named lws110_x64.exe. I opened it as an archive with 7-Zip and copied the contents of the Drivers folder to a folder in my desktop. Inside was a folder named x64 folder, and two files: DevInst.cfg and LgDrvInst.exe. (Just as an FYI if you open DevInst.cfg in notepad you will see a setting for "MIGRATELEGACYQUICKCAM")
* Execute LgDrvInst.exe and it will install all of its drivers into Win8 - the crucial part being that it will migrate legacy QuickCam drivers.
* Plug in the camera.
* Open Device Manager and double-click the camera with the yellow exclamation point icon.
* Select the "Update Driver..." button.
* Select the "Browse my computer for driver software" button/section.
* Select the "Let me pick from a list of device drivers on my computer" button/section.
* Scroll down to "Logitech" in the "Manufacturer" listbox.
* Select "Logitech QuickCam Chat" in the "Model" listbox.
* Select the "Next" button.
* Select the "Yes" button on the "Update Driver Warning" dialog box.