24 Hour time in Windows XP

If you think 24 hour time is cooler, more useful, want to save space on the Windows system tray or for whatever reason had AM and PM time as default and want to change to 24 hours, follow these instructions:

Start > Control Panel > Regional and Language options

(Next to English) click "Customise"

click the "Time" tab

Change the value for "Time format" and change whatever foramt you are using from 'h" to 'H"

Apply and your done!