Network Connection

Have 2 HD-DVR and 1 STDR.

Local area network and wireless network running from a 2wire DSL modem.

2 pc's connect via Ethernet and 1 via wireless.

connected to DIRECTV via DECA Broadband Adapter and Ethernet cable.

network test on DIRECTV cannot connect, gives error code 71-73-144 (don’t know where to find these.

Any ideas? Firewall, cable, me (no, I didn’t set all this up, by tech monkey daughter did then left town!)