Customizing the manufacturer info in Windows XP was pretty straightforward with a OEMINFO.INI and OEMLOGO.BMP file placed in the system32 directory. However, that is changed in Windows Vista. After my recent clean install on my Dell laptop computer, I had to restore the manufacturer and support information. A little bit of searching yielded that this information is now stored in the registry in the following location and in the following format:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\OEMInformation
"Manufacturer"="YOU"
"Model"="WHATEVER"
"SupportHours"="24 hours"
"SupportPhone"="XXXXXXXXX"
"SupportURL"=http://www.manufacturer.com
"Logo"="C:\\Windows\\system32\\manufacturer.bmp"
The values are all string type. The manufacturer's logo should be a 160x160 bitmap file. The customizations appear in the system properties dialog box and in the Welcome Screen which is automatically launched during OOBE.