The reason the time is always going wrong is your motherboard. It's on-board Battery is not working. It is supposed to charge up whenever it has the chance, but it's not doing that, so your clock is not staying set right. It happened on my old computer. You will have to get another motherboard (i think) unless you can somehow change the battery.

And i like Win XP
(once you make it look EXACTLY like Win ME/98/95, which i have, because Grey rocks, not blue and green, and the new start menu sucks)