1.) If u r talking about hiding particular partitions, then it may help u:
Goto: Start -> Run and type regedit.
And nevigate to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer key
Then create a new DWORD value NoViewOnDrive and set its value according to which drive u want to hide, Set its value:
3 : To protect A:, B: Drive
4 : To protect C: Drive
7 : To protect A:, B:, C: Drive
8 : To protect D: Drive
f : To protect A:, B:, C:, D: Drive
3ffffff : To protect All Drives ( Same can be done by creating DWORD value "NoDrives" and set its value "3ffffff" )
0 : To protect No Drive
2.) And for hiding Control panel, create a new DWORD value NoSetFolders and set its value to 1.