If the Accessories or Games does not appear in Add/Remove Windows Components,
try the following:
1. In the Run Dialog from the Start Menu, type in
'notepad %windir%\inf\sysoc.inf', then press Enter
2. Go to the Games=ocgen.dll,OcEntry,games.inf,HIDE,7 and
AccessUtil=ocgen.dll,OcEntry,accessor.inf,HIDE,7 lines, then remove the word
HIDE from each of those. Be sure to leave the commas alone.
3. Save the file, then restart Add/Remove Windows Components.
To prevent users from deleting the Pinball files:
1. Make sure your users are not in the Administrators or Power Users groups
(they should just be in the "Users" group
This can be accomplished by going into the Run dialog again, and type
'lusrmgr.msc', then go to Groups, then select the group you want to check
membership, double-click it, then, in the resulting dialog, edit the group
membership by adding or removing users.