Open the Registry Editor and find the key below.
Highlight the Order entry in the Contents pane, then delete it. The list will be in alphabetical order the next time Windows opens.
You'll find a similar Menu subkey under each of the &Program subkeys Accessories, Games and so on). Follow the same procedure to alphabetize those lists, too.
With Windows 98 or 2000 it's even easier simply right-click on the menu you want to re-order and select 'Sort by Name'.
Key:[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MenuOrder\Start Menu\&Programs\Menu]
