To much going on, but little time for my home network

I've been quite busy. We bought our house and so we no longer need to pay rent... but the bank wants to see money now. I haven't been able to do much on my home network. I got myself a couple of cheap ISDN-cards to start playing with asterisk, but still haven't found the time to start playing with them. Hopefully I will soon find time. But first we'll change the heating of our house. The old heater is 19 years old and is not efficient enough. We also want to get rid of our electric boiler. I already use enough electricity for my computers.