Removing Options From Start Menu That Refuse To Be Removed

1. Open Registry Editor by inputting Regedit in StartMenu/Run.
2. Go to HKEY_CURRENT_USER/Software/Microsoft/CurrentVersion/Explorer/Advanced.
3. If you want to remove My Music from start menu, change the value of REG_DWORD Start_ShowMyMusic from 1 to 0. If you want to remove My Pictures from start menu, change the value of REG_DWORD Start_ShowMyPics from 1 to 0. If you want to remove Recent Documents from start menu, change the value of REG_DWORD Start_ShowRecentDocs from 1 to 0. You can try others on your own.
4. Restart Explorer and see the change.

Clearing Recent Documents Automatically While Exitting In Windows XP

1. Open Registry Editor by typing Regedit in StartMenu/Run.
2. Go to HKEY_CURRENT_USER/Software/Microsoft/Windows/Policies/Explorer.
3. Make new DWORD named ClearRecentDocsOnExit.
4.  Set its value to 1.
5. Refresh by pressing F5.

Changing Default Icons Of Drives In Windows XP

1. Open Registry Editor by clicking on Run from Start Menu and typing Regedit in the dialog box that appears and clicking on OK.
2. Go to HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows/CurrentVersion/Explorer/DriveIcons
3. Make a new Key under it and rename it to the name of the drive whose icon you want to change. e.g. C, D, E, etc.
4. Make a new Key under this Key which you made and rename it to DefaultIcon.
5. Change the (Default) REG_SZ value in DefaultIcon you made to the address of the icon which you want as the drive's default icon.
6. Refresh by pressing F5.
7. See your own icon in your drives now.  

Displaying A Notice Before Your Computer Completes Its Booting Process

1. Open Registry Editor. This can be done by clicking on Start button, selecting Run, inputting regedit and clicking on OK button.
2. Go to HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/Current Version/Policies/System
3. Right click on the pane on right and create 2 new REG_SZ and rename them to legalnoticecaption and legalnoticetext and put their values to the caption text and the notice text you want to be displayed.
4. Restart your computer and see your own notice being displayed while your computer boots.

Disabling Drives From My Computer

1. Open Registry Editor. This can be done by clicking on Start button, selecting Run, inputting regedit and clicking on OK button.
2. Go to HKEY_CURRENT_USER/Software/Microsoft/Windows/Current Version/Policies/Explorer.
3. Right click on the pane on right and create a new REG_DWORD. Rename it to NoDrives and put its value to 3FFFFFF.
4. Go to Task Manager.
5. End the process named Explorer.exe under the Processes tab.
6. Under Applications tab, select new process and type Explorer.exe in the dialog box that appears and click on OK.
7. Your Drives in My Computer has been disabled.
8. To enable Drives again, change the value of NoDrive to 0 and restart Explorer.exe. 

Disabling Run Command From Start Button

1. Open Registry Editor. This can be done by clicking on Start button, selecting Run, inputting regedit and clicking on OK button.
2. Go to HKEY_CURRENT_USER/Software/Microsoft/Windows/Current Version/Policies/Explorer.
3. Right click on the pane on right and create a new String Value. Rename it to NoRun and put its value to 1.
4. Go to Task Manager.
5. End the process named Explorer.exe under the Processes tab.
6. Under Applications tab, select new process and type Explorer.exe in the dialog box that appears and click on OK.
7. Your Run in start menu or New Task in task manager button has been disabled.
8. To enable Run again, change the value of NoRun to 0 and restart the computer (since  New Task option will be disabled). 

Disabling Shutdown In Windows XP

1. Open Registry Editor. This can be done by clicking on Start button, selecting Run, inputting regedit and clicking on OK button.
2. Go to HKEY_CURRENT_USER/Software/Microsoft/Windows/Current Version/Policies/Explorer.
3. Right click on the pane on right and create a new String Value. Rename it to NoClose and put its value to 1.
4. Go to Task Manager.
5. End the process named Explorer.exe under the Processes tab.
6. Under Applications tab, select new process and type Explorer.exe in the dialog box that appears and click on OK.
7. Your Shut Down button has been disabled and your computer wont close until you do something drastic.
8. To enable shut down again, change the value of NoClose to 0 and restart the Explorer.exe process again.