Thanks to all for the help!

The LimeWire / 2Wire(tm) Home Portal Network / SBC Yahoo! DSL / plot thickens! The mists are clearing... and we may see some light at the end of the tunnel now....

When my friend has time later today -- he will re-config his firewall + his LimeWire -- with all our new discoveries, and then we will then test, and report back here to concisely document the whole picture... stay tuned!

I'll collect and summarize the configs and the results later today, and post here.

- Geo