perhaps look into your profile ... that is where your other information like normal.mxt is stored, so I assume the others are as well
c:\users\{user profile}\My Documents\ArcGIS
but you might want to move it to a more appropriate space, ... perhaps GIS ... here is the community structure
GeoNet Community Structure
ADDENDUM
Maybe Curtis Price will have some ideas... here is his Space
ArcGIS for Desktop Installation support
