Question about Microsoft Office 2003 MSOCache

For those that may not know,
the hidden folder MSOCache contains the Office Setup Files which gives you the convenience of avoiding finding your Office 2003 CD and just repair/reinstall Office 2003 anytime you wish.

I have two harddrives.
C is my main drive,
and E is an empty drive, which I intend to keep for pictures & music files, etc.

When I installed office 2003, my installer put the MSOCache folder (Office Setup Files) into my E:/ drive.
I'd like to know what the best way to move those files to the C:/ Drive is.
Do I have to do it through office, somehow?
If I move it manually, will Office not be able to find the setup files if it needs it?

Please guide me in the right direction.

Thank you.