The MSOCache folder is created when you install Office 2003 from the install disk.
You are then given the choice to keep it or delete it. It's best to keep it as occasionally
you are asked if you want to install features and if you do, the program accesses
the Cache folder, otherwise you would need to insert your install disk.
So, do you have a Microsoft Office disk. If so and you are having problems setting up,
you need to ensure that the program is properly uninstalled first and then try again.
If it sets up OK, you will have a new MSOCache folder, if you have chosen to keep
the setup files on your computer.
If you have no disk, the answer is no, you cannot download an MSOCache folder.
Remove the Office program through Add /Remove. If it won't go for some reason,
you could use the REVO uninstaller.
The WinCleanup Utility may also assist:
MS Article (kb 290301) :
"When you are working on your computer and installing a new program, the installation suddenly fails.
Now you are left with a partly installed program. You try to install the program again, but you are unsuccessful.
Or, maybe you have problems trying to remove an old program because the installation files are corrupted.
You can use the utility to remove installation information for programs that were installed by using Windows Installer.
Be aware that Windows Installer CleanUp Utility will not remove the actual program from your computer.
However, it will remove the installation files so that you can start the installation, upgrade, or uninstall over."http://support.microsoft.com/kb/290301