However, I found something even more cool on this page here
When you right click any file or folder, you will notice an extra tab called Timestamp
where you can change the dates/time.
However, I have yet to find out how to prevent the modified timestamp from changing when I make modifications to a file or its properties. I guess there is no way this can be done natively in Windows.
So this is a 2 step process.
1) Change what you need to you in your file, click apply and OK....the timestamp will be modified.
2) Right click, select Properties then the Timestamp tab and change the date. Click apply and OK and voila! the timestamp has changed!!
There is no way around the 2 step process....a small price to pay for a wonderful piece of freeware!