OK, so here is the setup:
eMac hooked up via ethernet to DSL modem. eMac also has Airport Card installed and Sharing Prefs setup for Internet Sharing.
Powerbook with Airport Extreme card trying to surf internet off the Software Base station setup on eMac.
This has worked until recently. I am able to connect my Powerbook to the eMac's Airport network, and share files, but NOT the internet signal.
Is it possible that the ISP has made it impossible to do this now, realizing that many people are surfing off other's accounts?