Perhaps you are forgetting something? Folks following your suggestion will be disappointed when the computer automatically changes the time again using the old DST schedule.
So, as long as you're making the manual change, click on the Time Zone tab and uncheck the box at the bottom of the window. And don't forget to click the Apply button when you're done.
"Perhaps you are forgetting something? Folks following your suggestion will be disappointed when the computer automatically changes the time again using the old DST schedule."
Not really... just change it! So what if you set it twice? It takes maybe 20 seconds. Considering all the clocks you have to manually change in the house and cars, another 20 seconds is nothing. However, if you prefer to spend many minutes uploading and installing some fix, be my guest.