The normal KLIMB Mt Tam setup program should have installed them already. Otherwise you can either click on the desired region on the map or on its entry in the table. After downloading then running the file, it will create the Mount Tamalpais Zone if it doesn't exist and install the selected region.

MOUNT TAMALPAIS ZONE

MT TAMALPAIS ZONE
Region	Windows Setup	Source
Headlands Region Alpine Lake to the Golden Gate Bridge	setup_headlands.exe (6.2 mb)	headlands.zip (5.9 mb)
North Region Kent Lake to Tiburon	setup_north.exe (10.6 mb)	north.zip (10.4 mb)
Mt Tamalpais Region The entire zone at a lower resolution	setup_mttam.exe (4.7 mb)	mttam.zip (4.4 mb)