Typically, the Nook Color running CyanogenMod 10 will try to connect to wireless networks using DHCP. Instead, assigning it a static IP address might be useful on a home wireless network.
Open the Settings app and choose Wi-Fi.
Press and hold on the wireless network you are connected to. In the menu that pops up, choose Modify network.
Choose Show advanced options. In IP settings, choose Static. Provide the IP address you want. The Network prefix length, DNS 1 and 2 settings should be correct, but you can modify them if you need to.
Choose Save. Ensure your Nook Color can connect with the new settings and you are done! 😊
Tried with: Nook Color 8 GB and CyanogenMod 10-20121228-NIGHTLY-encore