I've finally managed to have a usable desktop installation on my Thinkpad X61. I have X running, Firefox (I need to install the Flash plugin) and wpa_gui running fine with dhcpcd in the background.
I have used Fluxbox for long time on various Linux distribution, but I haven't managed to have it auto regenerate its menu on Netbsd (I can expand that if necessary). The file structure is different from the one on Slackware and other Linux distros and I couldn't reuse my existing configuration files. I am looking for a recommendation for a lightweight manager that can update itself after installing new packages and doesn't list non existent applications. I have also tried Joewm but unfortunately I had the same problem. Thanks -- Ottavio