1.
Edit the hidden system file SYSOC.INF in the Windows/Inf
folder (or WINNT/Inf if you upgraded from NT or 2000).
2. Delete all instances of the word HIDE. Don't put
any spaces inbetween the commas.
3. Save your changes.
4. Open 'Add or Remove Programs' in Control Panel.
5. Click on 'Add/Remove Windows Components. You will
now see options for 'Accessories and Utilities' (the
programs in the Accessories menu on the Start panel),
MSN Explorer and several other components.
6. Uncheck the tick box to remove that component or
check it to install it from your XP CD.
Be
careful what components you remove though!