In my opinion, the NetBSD community is slowly decaying and has not kept up with the documentation.
xorg actually has two options: monolithic vs modular. Instructions for modular xorg were on an independently maintain wiki which ceased to exist in June of this year. You can still find archived copies on the internet. If you build a desktop environment/window manager it is helpful to use the same xorg version that was used to build the desktop environment/window manager
http://web.archive.org/web/200803030...d.se/Main_Page
The other issue you will likely encounter is wireless encryption. Unless you need a unique feature of NetBSD I would strongly consider OpenBSD or FreeBSD for your laptop.