A few options for a 2nd TV (assuming it's HD) :
1) All outputs are active on HD DVR's, so you can run an HDMI cable to one TV and some component outs to another TV and watch HD on two tv's. Of course, both TV's will be watching the same thing.
2) You can get another basic HD box (non DVR) and pay like $5/mo to enable whole-house DVR. Then you can see whatever is in your DVR on that basic box as well, plus you can watch normal tv of course. But you need to run cable to it from the sat dish, so do that during your free install.
3) You can connect an HTPC to your tv and use DirecTV2PC (free), which shows you everything in your DVR as well. You can't see a guide to channel surf life tv, but you can do something like setting a program to record via your smartphone and immediately start watching it on your computer.
Good advice. We'll see about the second option. I hope I can convince the guy to run another line, even though I didn't order the second box yet.