Picture #1 |
Picture #2 |
Picture #3 |
Picture #4 |
The screens and options come from Windows 8, but I
believe the same steps will work in Windows 7 as well.
If you go into Control Panel, click on "Clock, Language, and Region", and then "Region". You should end up with a picture similar to Picture #1 above.
However, in both drop down lists (Short Date Format, and Long Date Format), you have limited set options.
So, click on the "Additional Settings" button to bring up what I'm showing in Picture #2.
If you click on the "Time" Tab, you get what is shown in Picture #3.
On this screen, you can then set the long and short date formats however you want, using the options on the bottom.
If you click on the "Date" Tab, you get what is shown in Picture #4.
I don't know if you can combine both Date/Time into a group as you have shown, but you should be able to set each part to be the format you are looking for.
Hope that helps.
--Brian