MN-730 Internet issue

I have a MN-700 wireless-G base station connected to my
main computer (running XP) via ethernet. I have added
another computer (running Win ME) to my network via
wireless connection (MN-730 wireless G Adapter). I can
connect to the network from both computers, everything
from that stand-point is fine. The problem I have is
connecting to the Internet via the wireless connection. I
have an external cable modem. When I first bring up the
Broadband Utility, it shows that I am connected to the
Internet. Yet when I try an bring up a web page, it says
the page is unavailable, and my Broadband utility says
Internet unvailable, troubleshoot. I have done everything
Microsoft recommends, reset modem, reset base station,
etc. Nothing works. Any recommendations would be greatly
appreciated.