This is a complete list of steps I went through to configure my N770 in case I have to go through them again. Since I had previously messed the settings up. I am starting with a reflash to the latest version.

• Upgrade to the latest official version using these instructions. Currently this is 3.2006.49-2. I am not brave enough to try the unsupported OS2007 Hacker Edition yet.

• Tools→ Control Panel → Connectivity , fill in my Home WiFi info. This is necessary because my network is hidden.
  • Click on Conections, then on next
  • Fill in “Home WWCF”, select WLAN, don't scan
  • Fill in name, select hidden checkbox, WPA pre-shared key
  • Close, choose select connections and connect

• Follow these instructions to become root and install an xterm. For initfs_flash, no to backup, yes to remove extra.

• Follow these instructions to copy the installation to a 2GB MMC card I have installed and boot from that instead. This retains the original configuration in case I need to revert to it, provides more diskspace and is reported to run faster.