Like this:

The DD-WRTs are Linksys WRT54Gs running DD-WRT, configured as bridges.
The arrow going out the bottom is the link to the RV.
The arrow going left is a link to my neighbor, who lets me use his DSL. I only use it to check the DVRs.
The parabolic dish lets me see 3 hotspots in a nearby city park.
The EB1304Net+s are Avermedia digital video recorders. If you need a surveillance DVR, I highly recommend these.
WPA2 Personal on all links.