Using timer on arduino Micro

I am trying to use a timer function on an arduino micro so that I can set a servo to move at specific time intervals. However I want to know what pin the micro uses for timer? I can't seem to find much information online. Thanks

Also I have been trying to use this SimpleTimer code but whenever I run it I get an error saying that "SimpleTimer" does not exist. I am using the same usage code from the page and saving the .h and .ccp codes in the libraries folder so not sure what's up? I am running arduino on mac os.

Anyone used this before?

Why not just use millis() as in the Blink Without Delay example sketch?