Link takes you to MS download page.
In 2005 Congress changed the law on DST.
In order for you computer to update at 2.00 PM DST, you need a patch from
Microsoft to effect the time change on your computer. This does not apply to
Microsoft's newest system Vista, and only XP and older computers made before
You may also do this manually, but I also told if you don't have the patch
will need to do this on a yearly basis.
DST Update Patch