Newbie with closed port

[guzzlersden]

Hi friends,
I'm a newbie, and I can't get Transmission to work because of a closed port. I set the message log to debug, and here's what I got.

2010-01-14 09:05:43 -0800 port-forwarding.c:166 [Info] Port Forwarding: Stopped
2010-01-14 09:05:45 -0800 natpmp.c:68 [Info] Port Forwarding (NAT-PMP): initnatpmp succeeded (0)
2010-01-14 09:05:45 -0800 natpmp.c:68 [Info] Port Forwarding (NAT-PMP): sendpublicaddressrequest succeeded (2)
2010-01-14 09:05:53 -0800 upnp.c:97 [Debug] Port Forwarding (UPnP): upnpDiscover failed (errno 2 - No such file or directory)
2010-01-14 09:05:53 -0800 upnp.c:117 [Debug] Port Forwarding (UPnP): UPNP_GetValidIGD failed (errno 0 - Unknown error: 0)
2010-01-14 09:05:53 -0800 upnp.c:120 [Debug] Port Forwarding (UPnP): If your router supports UPnP, please make sure UPnP is enabled!
2010-01-14 09:05:53 -0800 port-forwarding.c:88 [Info] Port Forwarding: State changed from "???" to "Starting"
2010-01-14 09:05:54 -0800 natpmp.c:73 [Debug] Port Forwarding (NAT-PMP): readnatpmpresponseorretry failed. natpmp returned -7 (the gateway does not support nat-pmp); errno is 61 (Connection refused)
2010-01-14 09:05:54 -0800 port-forwarding.c:88 [Info] Port Forwarding: State changed from "Starting" to "???"

Any ideas of how I can get an open port?

Thanks so much for your help.

[guzzlersden]

Hi,
I have two more nuggets of information to convey about the problem:
1) The router is an Ewire 3800HGV-8, supplied by AT&T; and,
2) I don't know how to check whether UPNP or NAT-PMP are enabled on it.

Thanks again for your help.