PS....

I wrote:
On my MS Win XP Pro SP2 system,
Timer() has the same resolution as GetTickCount().

That was not intended to be a recommendation. If you do the resolution
tests, you might also notice that Timer() has significantly more
overhead then GetTickCount(). At least, that seems self-evident on my
MS Win XP Pro SP2 system with a 2.13 GHz Pentium CPU (single core).