Here are a few more links to other Dutch websites that may be of use:
http://www.martinairvliegschool.nl/
http://www.dfa-fto.nl/
http://www.epst.com/
http://www.ph-nav.nl/
http://www.vliegopleiding.nl/
I know that the KLS will not accept anyone who was born before 1974 on to their courses. This is from a telephone call I had with them a couple of months ago. Things may have changed since then though.